This year, moreover, growing numbers of nuclear-powered submarines will enter our active forces, some to be armed with Polaris missiles. These remarkable ships and weapons, ranging the oceans, will be capable of accurate fire on targets virtually anywhere on earth. Impossible to destroy by surprise attack, they will become one of our most effective sentinels for peace. To meet situations of less than general nuclear war, we continue to maintain our carrier forces, our many service units abroad, our always ready Army strategic forces and Marine Corps divisions, and the civilian components. The continuing modernization of these forces is a costly but necessary process, and is scheduled to go forward at a rate which will steadily add to our strength. The deployment of a portion of these forces beyond our shores, on land and sea, is persuasive demonstration of our determination to stand shoulder-to-shoulder with our allies for collective security. Moreover, I have directed that steps be taken to program our military assistance to these allies on a longer range basis. This is necessary for a sounder collective defense system. Next I refer to our effort in space exploration, which is often mistakenly supposed to be an integral part of defense research and development. First, America has made great contributions in the past two years to the world's fund of knowledge of astrophysics and space science. These discoveries are of present interest chiefly to the scientific community; but they are important foundation-stones for more extensive exploration of outer space for the ultimate benefit of all mankind. Second, our military missile program, going forward so successfully, does not suffer from our present lack of very large rocket engines, which are so necessary in distant space exploration. I am assured by experts that the thrust of our present missiles is fully adequate for defense requirements. Third, the United States is pressing forward in the development of large rocket engines to place much heavier vehicles into space for exploration purposes. Fourth, in the meantime, it is necessary to remember that we have only begun to probe the environment immediately surrounding the earth. Using launch systems presently available, we are developing satellites to scout the world's weather; satellite relay stations to facilitate and extend communications over the globe; for navigation aids to give accurate bearings to ships and aircraft; and for perfecting instruments to collect and transmit the data we seek. This is the area holding the most promise for early and useful applications of space technology. Fifth, we have just completed a year's experience with our new space law. I believe it deficient in certain particulars and suggested improvements will be submitted shortly.