Military secrecy veils an investigation of the mysterious, glowing aerial objects that showed up on radar screens in the Washington area Saturday night for the second consecutive week. A jet pilot sent up by the Air Defense Command to investigate the objects reported he was unable to overtake the glowing lights moving near Andrews Air Force Base. Methods of the investigations were classified as secret, a spoken said. We have no evidence they are flying saucers; conversely we have no evidence they are not flying saucers. We don't know what they are," a spokesman added. [Three] radar screens in the area picked up the objects. A traffic control center spokesman said the nature of the signals on the radar screen ruled out any possibility they were from clouds or any other "weather" disturbance. The objects, "flying saucer" or what have you, appeared on the radar scope at the airport center at 9:08 PM. Varying from four to 12 in number, the objects appeared on the screen until 3:00 AM., when they diappeared. One jet pilot observed four lights in the vicinity of Andrews Air Force Base, but was not able to over-take them, and they disappeared in about two minutes. The jet pilot reported he had no apparent "closing speed" when he attempted to reach the lights he saw near Andrews Air Force Base. That means the lights were moving at least as fast as his top speed-a maximum of 600 mph.