The grand climax of the Yorktown Bicentennial celebration was of course the speechmaking and military review on Monday, when President Reagan and President Mitterand of France were present, along with a host of VIPs and more than 60,000 spectators. Security was very tight in the wake of two strikes and a hit on world leaders, including Mr. Reagan, in seven months. The ap proximately 7,000 visitors invited to sit in the bleachers had to go through checkpoints with metal detectors, and all bags, cameras and other car ried articles were looked over thoroughly. Once inside, these visitors were seated about the length of a football field from the president, in great contrast with the 193! celebration, when one spectator recalls that President Hoover pass ed only a few feet from her as he walked to his place on the field. Those outside the barriers were up to half a mile away from the speakers’ stand. Speeches are naturally mandatory on such occasions; the brevity that characterized Monday's speeches and introductions was not the least of their merits, which included also a good salting of wit. When the Speeches were over, the real fur started as the military review began. There were five principal bands on the field, one each from France, Germany and the United Kingdom, and the VMI and Army bands from the United States. The ceremonies had opened with the