NATION IN BRIEF : FLORIDA : Grounding Over for Astronaut Pair

Two astronauts grounded last year after separate airplane incidents were assigned to command 1992 space shuttle flights, NASA said in Cape Canaveral, Fla. Navy Capt. Robert (Hoot) Gibson, 44, received a one-year suspension after his stunt plane collided with another plane in a race at a Texas air show. The pilot of the other plane was killed. David Walker 47, also a Navy captain, was grounded for unspecified infractions of flying rules, one of which involved his near-collision with an airliner in 1989. Gibson will command a Spacelab mission; Walker will command a Defense Department flight.