3 U.S. Planes Downed by Reds(Continued from Page 1*crewmen aboard Che planes were rescued by helicopters.853 saturation bombers from Guam struck below the border, hilling 15 miles from the Buddhist canter of Hue. A U.S. spokesman In Saigon said the strike was aimed at a North Vietnamese regiment which is believed to have fillered down recently from North Viet Nam.Air strike targets In the North were supply lines, storage areas and military bases particularly around Dong Hoi, 40 miles north of the border, and Vinh, 150 miles north.Heavy ground fire caught a twin-engine B57 Canberra Jet,an A« Intruder and an A4 Sky* hawk.The U.S. Air Force Canberra was hit at 9:15 a.m. over a mountainous jungle area about 21 miles southwest of Dong Kol on the eoust. Capt. Lawrence R. Horacek, 30, of Ludington, Mich., angled the stricken plane out over the Gulf of Tonkin where he and Capt. Donald V. Damage. 29, of Muskogee, Okla., the navigator, parachuted Into the water. They were picked up shortly afterward by a helicopter piloted by Capt. Jerry W. Jennings, 32, of El Paso, Tex.At about the same time, Capt. Raymond H. Matthews, 38, ofSan Angelo, Tex.f hovering nearby Sn another helicopter, got a distress call from the pilot of a Navy A* Skyhawk that was bfil 4S itdlBS south of Vlnh. The pilot parachuted and Matthews1 craft rescued him at 1 p.m. and relumed Mm wifely to the carrier TfeonderogB.Two hoars later, a Navy AC with a crew of two caught a Norib Vietnamese shell during a strike Just north of the border. The pJlol managed to fly the crippled plane out over the sea 48 miles north of Da Nang In ScHlh Viet Nam, There the crew baPed out and Wftf rescued by hell copter-