
    No. 91-6297.
    No. 91-6375.
    No. 91-6398.
    Munoz Herrera v. United States; Marin-Pineda v. United States; and Segura Pretel et al. v. United States.
   C. A. 5th Cir. Certiorari denied. Reported below: 939 F. 2d 233.  