Show Orbit Try Set For Wednesday By ASSOCIATED PRESS CAPE FLA Alter several frustrating the United States plans to try again Wednesday to send John H. whirling into round-the-world IF EVERYTHING goes precisely on an Atlas missile will blast off at a.m. a.m. M ST that day to boost the Glenn toward his long-awaited date with the A perfect flight would take him three times around the world in 4 hours 50 minutes at an incredible speed of miles an NEAR THE END of the third braking rockets would slow his spacecraft and bring it down for a parachute landing in the Atlantic Ocean miles southeast of |