PAC-E TWO THE MVICHIGAN IAIY WE ZNESDA ,Y, 71~ciROH21, 194-D Naval ircraft Damages 15 to 17 Nip Daring Attack DestroysN By The Associated Press U. S' PACIFIC FLEET HEADQUARTERS, Guam, Wednesday, March 21-Vice Adm. Marc A. Mitscher's powerful carrier aircraft, seeking out the Japanese fleet in the empire's inland waters, damaged 15 to 17 enemy warships and destroyed 475 Nipponese planes Monday in one of the most daring exploits of the war. Adm. Chester W. Nimitz today announced preliminary results of the brilliant attack as "crippling damage" on the Japanese fleet, which the -