
    No. 77-1833.
    No. 78-1216.
    No. 78-6289.
    Sun Oil Company of Pennsylvania v. Unemployment Compensation Board of Review of Pennsylvania et al., British Airways Board v. Boeing Co., Czornonoh v. United States Secret Service; and Czornonoh v. Stallard et al.,
   440 U. S. 977;

440 U. S. 981; and

ante, p. 912. Petitions for rehearing denied.

Mr. Justice Powell took no part in the consideration or decision of these petitions.  