Opinion for the court filed by Circuit Judge KAREN LeCRAFT HENDERSON.
Maria Piroglu brought suit in district court against the District of Columbia, its then-Fire Chief T.R. Coleman, Fire Department Lead Inspector Roger Hooper and Police Sergeant Nora Coxeum (referred to collectively as the District), alleging violations of her fourth and fifth amendment rights. Specifically, Piroglu asserted that the mandatory urinalysis to which the District subjected her constituted an unreasonable search under the fourth amendment because: (1) Sergeant Coxeum visually observed as she produced her urine sample; and (2) the testing was conducted in the absence of regulations limiting the District’s discretion to order unannounced urinalysis. She further alleged that *1100 the District violated her fifth amendment right.to due process when it terminated her employment on the basis of a positive drug test without providing her notice and an opportunity to be heard. Piroglu appeals the district court’s grant of summary judgment to the District.
I.
Piroglu began her employment with the District on July 7, 1986, as an emergency medical technician (EMT) and was immediately enrolled in a four week mandatory training course. From the outset, the District notified Piroglu and her fellow EMT trainees that they would be tested for illegal drug use. Joint Appendix (J.A.) at 47, 61. The District did not, however, let the trainees know when the testing was to take place. Near the end of the training course, EMT Training Instructor Roger Hooper informed the trainees that their drug tests were scheduled later that day. They were then taken as a group to the Police and Fire Clinic (the clinic) for the tests.
Once at the clinic, Piroglu was instructed to urinate into a bottle in the presence of Coxeum. It is unclear from the record before us the circumstances under which Piro-glu provided her urine sample. Piroglu implies that Coxeum observed her urine as it passed from her body into the bottle. Piro-glu’s Brief at 5 (“Coxeum observed Plaintiff as she urinated into a bottle.”). The District asserts that although Coxeum watched Piro-glu continuously as Piroglu provided the sample, she did not actually watch Piroglu’s urine pass into the specimen bottle. J.A. at 107-08. At any rate, when Piroglu handed the filled specimen bottle to Coxeum, Coxe-um observed that the sample felt cold. Believing that Piroglu had tampered with her sample, she called in another clinic employee and the two observed Piroglu as a second sample was produced.
The clinic tested Piroglu’s second urine sample using the enzyme-multiplied immunoassay technique (EMIT). According to the record, EMIT is 95 to 96 per cent accurate in determining the presence of controlled substances in urine. J.A. at 94. Pi-roglu’s sample tested positive for cocaine metabolites. The clinic then sent the specimen to CompuChem Laboratories, where it was tested again, this time using the gas chromatography/mass spectrometry (GC/MS) method. When used in combination with EMIT, the GC/MS method is 99.9 per cent accurate. Id. The CompuChem test also yielded a positive result. Piroglu has never challenged the accuracy of the test results.
Piroglu was not permitted to complete the one-year probationary period required of EMT trainees because of her positive drug test results. On August 20,1986, Chief Coleman notified Piroglu by letter that her employment was terminated for failure to complete successfully her probationary period. On March 4, 1987, Piroglu brought suit against the District alleging violations of her fourth and fifth amendment rights. Both Piroglu and the District moved for summary judgment. After the parties had briefed and argued their motions, the Supreme Court granted certiorari in two unrelated cases involving fourth amendment challenges to mandatory drug testing procedures.
See Skinner v. Railway Labor Executives’ Ass’n,
After the Supreme Court decided
Skinner
and
Von Raab,
the parties rebriefed their cross-motions for summary judgment. The district court then, for reasons not explained in the record, held the case under advisement for three years. During that time, we decided
National Treasury Employees’ Union v. Yeutter,
*1101 The district court granted the District’s motion for summary judgment on April 29, 1992. Because the district court’s order did not discuss Yeutter, Piroglu filed a motion requesting the court to reconsider the effect of Yeutter on her fourth amendment claims. On July 17, 1992, the district court denied Piroglu’s motion for reconsideration.
II.
The District’s collection of Piroglu’s urine sample constitutes a search subject to the fourth amendment’s requirement of reasonableness.
See National Treasury Employees’ Union v. Von Raab,
A.
In order to determine whether the District’s visual observation of Piroglu as she provided her urine sample violated the fourth amendment, we must balance the District’s interest in observation with the resulting intrusion on Piroglu’s interest in privacy.
National Treasury Employees’ Union v. Yeutter,
Nevertheless, we offer some guidance to the district court in its analysis of Piroglu’s claim that the District’s visual observation of her rendered the testing unconstitutional. In denying Piroglu’s motion for rehearing the district court declined to consider our decision in
Yeutter
because the case “did not purport to operate retroactively to invalidate urine-testing. of particular specimens acquired earlier.” J.A. at 183-84. We disagree with the district court’s analysis. We decided
Yeutter
in November, 1990, well in advance of the district court’s grant of summary judgment on April 29, 1992. Accordingly, the district court’s decision not to apply
Yeutter
in a case pending at the time
Yeutter
was decided was incorrect.
See Harper v. Virginia Dep’t of Transp.,
- U.S. -, -,
If the district court finds that Coxeum’s observation of Piroglu as Piroglu urinated was unobstructed and complete and was without reasonable suspicion that she would tamper with her sample, the collection of Piroglu’s first urine sample was unreasonable under the fourth amendment.
See Yeutter,
Finally, we address the remedy available to Piroglu if the district court finds that her testing was unreasonable. Piroglu seeks reinstatement and back pay as well as compensatory and punitive damages.
See
J.A. at 27. Even if the court determines that Coxeum’s visual observation of Piroglu as Piroglu urinated was unreasonable, an award of reinstatement and back pay would be inappropriate. As noted earlier, Piroglu’s first sample was never tested. Accordingly, any constitutional infirmity in the collection of the first sample in no way led to Piroglu’s termination. If the court concludes that the collection of her second sample was similarly tainted, reinstatement and back pay would nevertheless be unavailable remedies because the constitutional violation did not
cause
Piroglu’s discharge.
See Carey v. Piphus,
B.
Piroglu also argues that the District’s drug testing was unreasonable because it was an exercise of unbridled discretion. Specifically, Piroglu contends that because District regulations did not specify that she could be tested randomly, the District was required to obtain a warrant before testing her.
2
As the Supreme Court has explained, an employer need not obtain a warrant before testing its employees “when special needs, beyond the normal need for law enforcement, make the warrant and probable cause requirement impracticable.”
See, Skinner,
The District has a strong interest in testing its EMT trainees for drug use. Once the trainees become EMTs they are called upon to assess an emergency patient’s symptoms, to administer cardiopulmonary resuscitation and to transport the emergency patient to a health care facility.
See generally District of Columbia v. Howard,
Balanced against the District’s strong interest in testing trainees without a warrant, the invasion of Piroglu’s privacy resulting from a warrantless drug test is relatively slight. Piroglu was informed at the beginning of the probationary period that she would be tested for drug use at some point during her training. J.A. at 47. Although advance notice of drug testing does not automatically defeat an employee’s argument that the testing is unconstitutional, it does decrease his expectation of privacy.
See Willner v. Thornburgh,
Piroglu next argues that the drug test was unreasonable because the District did not have regulations in place delimiting its discretion in testing its trainees. Specifically, Piroglu asserts that the decision to subject her to random drug testing was an exercise of unrestricted discretion on the part of EMT Training Instructor Hooper because no regulation authorized the testing of EMT trainees in the absence of individualized suspicion. Piroglu relies primarily on the Supreme Court’s decision in
Skinner.
In that case, the Court’s holding that the employer was not required to obtain a warrant before subjecting its employees to urinalysis was based, in part, on its conclusion that the warrant requirement would “do little” to protect the employees’ privacy because “[b]oth the circumstances justifying toxicology testing and the permissible limits of such intrusions are defined narrowly and specifically in the regulations that authorize them, and doubtless are well known to covered employees.”
Skinner,
The absence of regulations governing the District’s testing of Piroglu does not alter our conclusion that the District’s interest in testing its EMT trainees without a warrant outweighs Piroglu’s privacy interest. Piro-glu’s privacy interest was not adversely affected by Hooper’s decision to test her and her fellow EMT trainees as part of their training program — as noted earlier, Piroglu and the other trainees were informed from the outset that they would be subject to drug testing during their training period. J.A. at 47, 61. A regulation expressly authorizing the drug testing of EMT trainees would not have provided Piroglu with notice she did not otherwise receive. The District apparently had in the past subjected all EMT trainees to unannounced drug testing at some time during their training. See J.A. at 72 (“Other classes of EMTs, which preceded plaintiffs class, were uniformly tested for drug use immediately prior to their completion of training.”). Indeed, Piroglu concedes that she had been told that she “might be subject to drug testing during her employment.” Pi-roglu’s Brief at 4. 3 Moreover, the District’s *1104 uniform practice restricted its discretion to order drug testing. The practice authorized Hooper to order his EMT trainees to submit to unannounced drug testing; it would not, however, have authorized him to single Piro-glu out in the absence of individualized suspicion and subject only her to an unannounced test. Because Piroglu had notice that she was subject to unannounced drug testing and because the District’s uniform practice sufficiently delineated its authority, its testing of Piroglu was not unreasonable under the fourth amendment.
C.
Finally, Piroglu challenges the district court’s grant of summary judgment on her fifth amendment claim, asserting that the District denied her due process when it terminated her employment without providing notice of the evidence against her and an opportunity to be heard. The legitimacy of Piroglu’s argument turns on whether she had a property interest in continued employment.
See Cleveland Bd. of Educ. v. Loudermill,
Piroglu’s status as a probationary employee is a large hurdle for her to clear in order to establish a property interest. Probationary employment is ordinarily considered employment at will.
See Wheaton v. Webb-Petett,
Piroglu relies on a District regulation relating to the separation of a probationer as the source of her entitlement to continued employment with the District. See J.A. at 115-16 (District Personnel Manual, Ch. 8, Subpart 6.3(H)(1)). The regulation provides that a probationary employee may be terminated before completing his probationary period if he “fails to demonstrate that he ... possesses the skill and character traits necessary for satisfactory performance.” Id. Pi-roglu argues that the regulation entitles her to continued employment by restricting the circumstances under which the District can terminate her employment. The district court disagreed, interpreting the regulation to provide for “the discretionary and unre-viewable termination of probationary employees during the probationary period.” J.A. at 181. We agree with the district court.
Although Piroglu asserts that under the regulation the District can terminate her employment
only
if it determines that she lacks necessary skill and character traits, the word “only” does not appear in the regulation’s text. The regulation merely sets out certain circumstances in which a probationary employee may be terminated; it does not limit the District’s discretionary right to otherwise terminate him.
But see Lewis v. Hayes,
Piroglu’s reliance on decisions from other jurisdictions holding that a probationary employee can have a property interest in continued employment is misplaced.
See, e.g., Lee v. Western Reserve Psychiatric Habilitation Ctr.,
For the foregoing reasons, we reverse the district court’s grant of summary judgment on Piroglu’s claim that the District’s visual observation of her rendered her drug test unreasonable under the fourth amendment and remand so that the district court may determine the precise circumstances of Piro-glu’s drug test. We urge the district court to decide the matter with dispatch in light of the fact that Piroglu’s complaint has been pending since 1987 — over six years. We affirm the district court in all other respects.
So ordered.
Notes
. The district court's Memorandum and Order is unclear on this issue. See J.A. at 179 ("The EMT candidates were allowed to void in private, observed only by a single superior of the same sex_"). If one is totally observed as he urinates, it can hardly be said that he is "allowed to void in private.”
. The District Fire Department regulations in effect at the time of Piroglu's test authorized drug testing when
a member of the Department clearly exhibits erratic behavior consistent with intoxication, giving the on-duty platoon commander probable cause to believe that the man is under the influence of ... drugs to the extent that his physical and mental facilities are affected and his judgment is impaired.
Fire Department Order Book art. 7, § 7. Although the District argues that its substance abuse policy did allow random testing of its EMT trainees, it appears from the record that, at the time of Piroglu’s test, the policy was not yet in effect. See J.A. at 72.
. Piroglu claims that the District did not have a uniform practice of testing each of its EMT train
*1104
ees.
See
Piroglu's Reply Brief at 1 n. 1. She did not, however, produce any evidence that the District has permitted a trainee to graduate without passing a drug test. Piroglu's bare assertion that no drug testing practice existed is insufficient to create a genuine issue of material fact rendering summaiy judgment inappropriate.
See Celotex Corp. v. Catrett,
. Piroglu’s reliance on the Fire Department rules is similarly unavailing. They provide, in relevant part, that "service of a probationer may be terminated by the Commissioner at any time during such year for misconduct, inefficiency, or unfitness.” Rules and Regulations of the Fire Department of the District of Columbia art. XII, pt. A, § 3 (reprinted in J.A. at 132). Again, we find the District's discretion to terminate a probationary employee unaffected by the Fire Department rule.
