John Glenn is suited up in 1966 during training exercizes prior to the Mercury-Atlas 6 launch

KSC62022003 - 23 OCTOBER 1998 - CAPE CANAVERAL, FLORIDA, USA: Astronaut John H. Glenn Jr. suited up in his Mercury pressure suit during training exercizes prior to the February 20, 1962, Mercury-Atlas 6 liftoff from Cape Canaveral. The flight would make him the first American in orbit. .Glenn returns to space aboard the space shuttle Discovery October 29 to be the subject of a variety of experiments on aging. Glenn, a Democratic Senator from Ohio, is 77-years-old. iw/ho/NASA UPI