Aрpellants were convicted in 1970 of several counts arising from the robbery of a mail truck. One of the principal prosecution witnesses at trial was Rice, a postal employee who had been aboard the truck as an armed guard at the time of the robbery. During the trial, defense counsel attempted to cross examine Rice and another witness regarding Rice’s possible complicity in the robbery.
1
The trial court ruled that such cross-examination would not be permitted unless defense counsel proffered evidence proving that Ride was involved in the robbery.
2
On appeal, this court held that the ruling was erroneous, citing Alford v. United States,
[TJhese cases are remanded to the District Court so that the witnesses Rice and Jones may be recalled for further cross-examination, and further direct examination if indicated, as to credibility and as to Rice’s alleged complicity in the crime. In this connection, the District Court will order that all evi *357 dence in the Govеrnment’s possession, documentary and otherwise, indicating that Rice was a confederate of the defendants be made available to appellants. See Brady v. Maryland,373 U.S. 83 ,83 S.Ct. 1194 ,10 L.Ed.2d 215 (1963). This would include, of course, all of the statements and testimony of the witnesses Rice and Jones previously withheld. After a full hearing, “[i]f the [trial] court determines that the additional evidence so received produces relevant testimony which is material to the credibility [or the complicity] of the witness [Rice] it shall grant a new trial.” United States v. Fowler, [151 U.S.App.D.C. 79 ,465 F.2d 664 (1972) ]. 3
Pursuant to these instructions a hearing was held in the District Court. The Court heard testimony from several witnesses and received several documentary exhibits in evidence. After the hearing, the District Court issued findings of fact and conclusions of law which it summarized as follows:
In summary, the Court finds that there is simply no evidence by which a jury could conclude that Rice was a conspirator in the robbery. It is not a question of determining whether the evidence on complicity was strictly “relevant” or “material”; there simply is no evidence of complicity. Even giving the jury the benefit of weighing the evidence and drawing inferences from it, and of weighing the demeanor of the witnesses, there is simply nothing here on the issue of complicity which could have altered the verdict in this case. 4
The court then denied defendants’ motion for a new trial. This appeal followed.
In United States v. Fowler,
In a criminal case where prior discovery is necessarily limited, defense counsel often cannot know in advance of trial what facts may be brought out on cross examination. For that reason, his cross examination is necessarily to some extent exploratory, and he should be allowed a reasonable latitude even if he cannot state to the court what precise facts his cross examination will develop. A reasonable amount of exploratory questioning should be allowed, based on slight suspicion, especially when the Government’s principal witness is involved.
After reviewing the record of the proceedings subsequent to remand, we are convinced that the purported evidence of Mr. Rice’s involvement in the robbery is so tenuous and speculative as to invite summary rejection. The evidence, had it been proffered at trial, could not have served as a predicate for additional cross-examination of Mr. Rice on the issue of his complicity in the robbery. The trial court properly denied appellants’ request for a new trial and we adopt its opinion with respect to the issues decided therein.
*358 Our decision regarding the need for a new trial is also dispositive of appellants’ various claims under the Brady doctrine 5 and the Jencks Act. 6 All documents sought by appellants were produced at the remand hearing. 7 The trial court ruled that they did not provide sufficient evidence of Mr. Rice’s involvement to permit additional cross-examination on that subject at a new triаl. The appellants do not contend that the new evidence would be useful for any other purpose or that it has led to the discovery of additional evidence warranting a new trial. Even assuming that these exhibits should have been produced by the Government at trial, therefore, failure to produce them was harmless beyond a reasonable doubt.
Appellant Johnson objects to the admission in evidence at trial of certain weapons and ammunition found in his apartment at the time of his arrest. The evidеnce included a .38 caliber pistol, a carbine and a quantity of ammunition. A Government witness testified that the pistol belonged to Johnson and was carried by him during the robbery. Tr. at 1029. Admission of the pistol was unquestionably proper. As to the rifle and ammunition, however, there is some question. The only apparent connection between these items and the crime charged is that they may have been purchased with the proceeds of the robbery. Tr. at 679. Without reaching the question of whether admission of this matter was error, it is clear that any error was harmless beyond a reasonable doubt. There is no danger that the evidence was inflammatory because other real and testimonial evidence that the robbers were armed was properly presented to the jury. Moreover, independent evidence of •appellant Johnson’s guilt — including the eye-witness testimony of another participant in the robbery 8 — was overwhelming.
Appellants also contend that the District Court erred in entering judgments, following-guilty verdicts, that imposed sentences running concurrently for both mail robbery, in violation of 18 U.S.C. § 2114, 9 (count one 10 ) and robbery *359 while armed, in violation of 22 D.C.Code §§ 2901 and 3202 (count two 11 ).
Each appellant was sentenced to three to ten years for mail robbery, ten years being the maximum under the federal statute in view of the fact that the verdict acquitted them of the charge in count one that appellants put the life of the custodian of the mail in jeopardy by the use of a dangerous weapon. Each appellant was given a longer term for robbery while armed, in violation of the D.C.Code. 12
A question arises notwithstanding the concurrency of the sentences in view of the possibility of adverse collateral effects of a conviction for two felonies. Benton v. Maryland,
The Government relies in this case on the doctrine of Blockburger v. United States,
Cases on the issue of multiple sentences tend to focus on legislative intent, wherein the court seeks to determine whether the legislaturе intends one criminal act to be prosecutable under two different statutory provisions. The leading cases are Prince v. United States,
However, the field is not without constitutional aspects. The Government asserts as being beyond question that had this robbery happened in any of the 50 states, appellants could of course have been tried by the state for robbery under a state statute and by the United States under the federal mail robbery statute. Bartkus v. Illinois,
This point need not be pursued, however, in view of the clear Supreme Court pronouncement that where the
same
sovereignty is involved the double jeopardy principle bars multiple prosecutions for the same offense by different elements of that sovereignty. The principle was applied in Waller v. Florida,
The question before us is not one of successive prosecutions but of a combined prosecution, due to the unique statutory provisions that permit the United States Attorney for the District of Columbia to cоmbine in one indictment, triable in the United States District Court for the District of Columbia, violations of both the United States Code and the District of Columbia Code. 16 This obviously does not involve the high purpose of the Double Jeopardy Clause to safeguard against “repeated attempts to convict an individual for an alleged offense, thereby subjecting him to embarrassment, expense and ordeal and compelling him to live in a continuing state of anxiety and insecurity . .” 17 Indeed, the opportunity of the prosecution under modern procedure to consolidate in a single trial all issues arising out of a single transaction, undercuts any claims of need to have recourse to multiple prosecutions in contravention of the policy of the Double Jeopardy Clause. This court has commented on the advisability of combining all possible charges into one prosecution so as to avoid double jeopardy problems and conserve judicial energies. 18
But if the problem is less, it is not insignificant when persons in the District of Columbia arе branded for both federal and District of Columbia Code felonies for what is essentially a single transaction. The problem is accentuated, and with constitutional considerations, if persons in every state of the Union committing the same act are not put under a multiple federal-state brand- — whether because of constitutional barriers (see supra, note 14), or because of the realistic consideration, identified as long ago as Fox, that except in unusual or emergency cases there is no sound warrant for multiple federal and state convictions even assuming constitutional authority.
Treating the question as one of legislative intent, we go beyond the more familiar problem of discerning the intent of overlapping provisions of federal statutes
19
toward reconstructing a legislative intention of overlapping federal and District statutes. This kind of question engaged the court’s attention in United States v. Spears,
The Government argues that
Spears
rests on a special gloss of doctrine applicable when only an attempt at mail robbery is charged. But in
Canty
the defendants were convicted of a robbery of a federally insured bank, not of attempt. The court held that the robbery of four tellers would not sustain multiple convictions even though there were concurrent sеntences, applying the rule that unless the intent of Congress is stated “clearly and without ambiguity, doubt will be resolved against turning a single transaction into multiple offenses.”
*362
20
And more pertinently the court held invalid the imposition of a sentence for assault with a dangerous weapon,
22
D.C.Code § 502, on top of the sentence for federal bank robbery, even though different elements of proof were involved — the federal law not requiring proof that the offender was armed, and the District provision not requiring proof that a bank was involved. The court stated that the
Blockburger
test was used “traditionally” as a starting point,
21
but added that even though the D.C. Code and U.S.Code provisions “require different elements of proof, there must still be a determination that Congress intended the provisions to bear separate punishments when applied to a single act or transaction.”
While Canty can be distinguished from the case at bar, its analysis is pertinent. In the case of the mail robbery statute, 18 U.S.C. § 2114, the scheme is not as comprehensive as that of the federal bank robbery statute. But the statute has a long and somewhat intricate history, as appears from Spears. In its wisdom Congress has provided these gradations: For robbery (of mail matter), or assault of the mail custodian with intent to rob, prison for not more than 10 years (for the first offense). For a second offense, or if the offender “wounds the person having custody of such mail, money ... or puts his life in jeopardy by the use of a dangerous weapon,” 25 years imprisonment.
Congress has thus deliberately addressed itself to the distinction between simple mail robbery and the case where a dangerous weapon is involved, and has provided an increase of punishment only if the use of the dangerous weapon puts the life of the mail custodian in jeopardy. We think the principles of Canty are applicable. It is no ground of distinction that the proseсutor in the case at bar did not initiate the charge on the lowest tier of the mail robbery statute. When the jury acquitted of the charge of putting the life of the mail custodian in jeopardy, all that was left was the included charge of, and conviction on, the first tier of the mail robbery statute.
The “traditional” rule of construction of Blockburger is offset somewhat by the rule that in the absence of plain legislative intention “doubt will be resolved against turning a sirfgle transaction into multiple offenses.” If anything, the mail robbery statute contemplates a single conviction, not multiple convictions, when the first tier of mail robbery is aggravated by the use of a deadly weapon.
*363 This conclusion does not mean that the deadly weapon aspect of the offense must be wholly ignored. As Canty points out, the discernment of legislative intention that there be a single conviction for the mail or bank robbery, and assaults comprised therein, does not preclude the conviction for carrying a dangerous weapon, in violation of 22 D.C.Code § 2304, 24 an offense that was complete without regard to any latеr use of the weapon in the robbery.
The appellants argue that the armed robbery conviction must be vacated, rather than the mail robbery count which carries a lower penalty. We are persuaded by the government’s view that the reconstruction of legislative intent would accommodate itself to the view that when Congress amended 22 D.C.Code § 2901 in 1967, providing a higher penalty for robberies in the District than has been provided since 1948 for federal mail robbery, it intended to provide the sentencing judge with discretion in determining the penalty. What is impermissible is not the joinder of offense for trial (as appears from Fuller, cited supra, note 18), but the joinder of judgments even with concurrent sentences. To maintain the sentencing discretion of the trial judge, without any possibility of confusion due to the multiple counts and verdicts, the case will be remanded to the trial court, with instructions to vacate the judgment on either count one or count two, and to re-sentence on the other count, as it may deem, after hearing from counsel, in the interest of justicе. 25
So ordered.
Notes
. Tr. at 559-66, 1081-93, 1749-59. This course of questioning was directed not only to Mr. Rice’s credibility but to the validity of the charge that appellants committed robbery from the person of Rice. Tr. at 221.
. Tr. at 560, 1085, 1090, 1750.
. Memorandum at 3, D.C.Cir. Nos. 24,772, 24,773, 24,889, filed July 14, 1972.
. Findings of Fact and Conclusions of Law at 7, D.D.C. Cr. No. 525-70, filed January 23, 1973.
. Brady v. Maryland,
. 18 U.S.C. § 3500 (1970).
. These included: (1) A previously undisclosed statement by Rice to investigators that he had once been at (but not inside) the African Hut — a nightclub where the robbery was allegedly planned; (2) Grand Jury testimony by one Robert Rippey that an “insider” was involved in the robbery; (3) a report of a polygraph test (one of three given) showing deception by Rice. regarding his involvement (contradicted by the results of two other tests); (4) a postal inspector’s memorandum of an oral report from a F.B.I. agent relaying an informant’s statement to police in Hyattsville, Maryland, that Rice was involved in the robbery.
. Testimony of Calvin S. Jones, Tr. at 1011 et seq.
. 18 U.S.C. § 2114 (1970).
§ 2114. Mail, money or other property of United States.
Whoever assaults any person having lawful charge, control, or custody of any mail matter or of any money or other property of the United States, with intent to rob, steal, or purloin such mail matter, money, or other property of the United States, or robs any such person of mail matter, or of any money, or other property of the United States, shall, for the first offense, be imprisoned not more than ten years; and if in effecting or attempting to effect such robbery he wounds the person having custody of such mail, money, or other property of the United States, or puts his life in jeopardy by the use of a dangerous weapon, or for a subsequent offense, shall be imprisoned twenty-five years.
. The count charging postal robbery (count one of the indictment) reads:
On or about December 23, 1969, within the District of Columbia, the defendants Arthur B. Knight, Haywood T. Kirkland, Robert L. Johnson, Calvin S. Jones and John H. Bowman, by force and violence and against resistance and by putting in fear, stole and took from the person and from the immediate actual possession of David W. Rice, mail matter and money which was the property of the United States, in the lawful charge, control and custody of David W. Rice, consisting of about $382,000 in money and in effecting such robbery, the defendants Arthur B. Knight, Haywood T. Kirkland, Robert L. Johnson, Calvin S. Jones and John H. Bowman put the life of David W. Rice in jeopardy by the use of dangerous weapons, that is, a pistol and a’ sawed-off shotgun.
. The count charging armed robbery under the District of Columbia statute (count two of the indictment) reads:
On or about December 23, 1969, within the District of Columbia, the defendants Arthur B. Knight, Haywood T. Kirkland, Robert L. Johnson, Calvin S. Jones and John H. Bowman, while armed with dangerous weapons, that is a pistol and a sawed-off shotgun, by force and violence and against resistance and by putting in fear, stole and took from the person and from the immediate actual possession of David W. Rice, property of the United States, in the care, custody and control of David W. Rice, consisting of about $382,000 in money. This is the same money which is mentioned in the First Count of this indictment.
Title 22 of the District of Columbia Code provides:
§ 22-2901. Robbery.
Whoever by force or violence, whether against resistance or by sudden or stealthy seizure or snatching, or by putting in fear, shall take from the person or immediate actual possession of another anything of value, is guilty of robbery, and any persоn convicted thereof shall suffer imprisonment for not less than two years nor more than fifteen years. (Mar. 3, 1901, 31 Stat. 1322, ch. 854, § 810; Dec. 27, 1967, Pub.L. 90-226, § 603, title VI, 8'l Stat. 737.)
§ 22-3202. Committing crime when armed — Added punishment.
(a) Any person who commits a crime of violence in the District of Columbia when armed with or having readily available any pistol or other firearm (or imitation thereof) or other dangerous or deadly weapon (including a sawed-off shotgun, shotgun, machinegun, rifle, dirk, bowie knife, butcher knife, switchblade knife, razor, blackjack, billy, or metallic or other false knuckles)-—
(1) may, if he is convicted for the first time of having so committed a crime of violence in the District of Columbia, be sentenced, in addition to the penalty provided for such crime, to a period of imprisonment which may be up to life imprisonment; and
(2) shall, if he is convicted more than once of having so committed a crime of violence in the District of Columbia, be sentenced, in addition to the penalty provided for such crime, to a minimum period of imprisonment of not less than five years and a maximum period of imprisonment which may not be less than three times the minimum sentence imposed and which may be up to life imprisonment.
(b) Where the maximum sentence imposed under this section is life imprisonment, the minimum sentence imposed under subsection (a) may not exceed fifteen years’ imprisonment.
(c) Any person sentenced under subsection (a)(2) of this section may be released on parole in accordance with chapter 2 of title 24, at any time after having served the minimum sentence imposed under that subsection.
(d) (1) Chapter 402 of title 18 of the United States Code (Federal Youth Corrections Act) shall not apply with respect to any person sentenced under paragraph (2) of subsection (a).
(2) The execution or imposition of any term of imprisonment imposed under paragraph (2) of subsection (a) may not be suspended and probation may not be granted.
(e) Nothing contained in this section shall be construed as reducing any sentence otherwise imposed or authorized to be imposed.
(f) No conviction with respect to which a person has been pardoned on the ground of innocence shall be taken into account in applying this section. (July 8, 1932, 47 Stat. 650, ch. 465, § 2; Dec. 27, 1967, Pub.L. 90-226, § 605, title VI, 81 Stat. 737; July 29, 1970, Pub.L. 91-358, § 205, title II, 84 Stat. 600.)
. Knight: 4 to 12 years; Kirkland and Johnson: 10 to 30 years.
. The Supreme Court’s ruling in
Bartkus
and earlier cases, e.
g.,
Jerome v. United States,
. In Malloy v. Hogan,
In
Murphy
the Court expressly overruled its decision in Feldman v. United States,
It is appreciated that the separate sovereignties doctrine of
Fox
was referred to and was not repudiated in Waller v. Florida,
. Holding of
Grafton
as stated in Waller, see
. See 11 D.C.Code § 502 (1973).
. Green v. United States,
. Fuller v. United States,
.
See,
e.
g.,
Prince v. United States,
.
. As in United States v. Maude, 156 U.S. App.D.C. 378,
.
.
Id.
at 117,
. See
id.
at 118,
. While the contentions under discussion in this opinion were advanced by appellants Knight and Johnson, in the interest of justice we extend the scope of our judgment to appellant Kirkland.
Another question may arise by virtue of the fact that the convictions of appellants Kirkland and Johnson on count 7 for the assault with a dangerous weapon of Arnold, the driver of the mail truck, were affirmed by this court’s order of July 14, 1972. There were no allegations of error as to this court on the ground of impermissible joinder of judgment or need for resentencing. In the interest of finality, our judgment today will permit but not require the district court to reconsider the judgment on count 7, if deemed appropriate in the interest of justice.
