The points to which investigating troops were sent today were those where actual explosions were reported* One witness told of fragments raining down after a great blast in the air above him* The resurgence of rocket activity stirred up a new wave of talk which had been ging on in varying degrees since the missiles since appeared May 24* Since then appearances hav been reported from mst of Scandinavia* At that time a staff of experts was assigned. They examined the clinker-like material left after explosions, and plotted as bes they oould the oourse of the missiles on huge maps# The movement of the rockets varied* Some followed a straight course* Others veered. In most cases the oourse was from southeast to northwest. But there were stories of missiles coming straight from the north, The missiles seemed to be flying soundlessly, giving rise to stories that they were launched or powered by som new means* The speeds were estimated in some cases as high as 600 miles an hour* In one of the few public comments by officials* Capt. GE* Stangenberg, acting ehief of the air defnse department, said in je- ply to a question about whether the rockets were instruments of Russian experiments: 1 canft confirm that* but I cant deny it eitherw