Appeals from the United States District Court for the *974Southern District of New York. Probable jurisdiction noted.
Solicitor General Cox, Assistant Attorney General Loevinger, Lionel Kestenbaum and Richard A. Solomon for the United States. Louis Nizer, Myles J. Lane and Benjamin Melniker for appellees in No. 553 and appellants in No. 555. Mervin C. Poliak for appellant in No. 556.
