Federal ActionHints MountingCuban CrisisROOSEVELT ROADS, PuertoRico (UPI) — The Navy abruptly canceled a tour by newsmen aboard warships today amid mounting speculation that Navy-Marine maneuvers in the area were somehow linked with the Cuban situation.The official explanation given was that the ships assembling in the area for scheduled maneuvers did not get dose enough to this naval base on the southeast coast of Puerto Rico to permit the air transport of reporters to the ves-Also canceled was a scheduled morning press conference with Vice Adm. Horaeio Rivero, commander of the amphibious exercise, aboard the flagship Mount McKinley.The maneuvers involved a force of about 20,000 men and 40 ships, | ] including an estimated 6,000 battle ready Marines. The Marines were due to storm ashore in a| imock amphibious assault on the small islaod of Vieques Wednesday. IINavy officials insisted the land-1. ing will be carried through as scheduled Tuesday. They aeid it had been planned for some time and in no way involved Cuba.Today’s activities had been scheduled to include firiog exercises about task force vessels.But Navy spokesmen steadfastly declined to speculate about Cuba. We won't talk about Cuba, poetically or military,” one officer said.KEY WEST, Fla. (UPI)—The Federal Aviation Agency hastily put a control tower into operation at Key West International Airport today to take care of increased air traffic, apparently caused by military aircraft connected with maneuvers in the Caribbean.Construction workers labored throughout the weekend to build the wooden tower atop an airport building. The small airport previously had no control tower.(5CHICAGO (UPI)—President Kennedy has summoned Everett M. Dirksen, Senate minority leader, back to Washington, Dirksen’s office announced today.The senator was told at 8:45 a.m. (9:45 a.m. EOT) that the President was sending a Jet plane here to pick him up for the return to Washington,” a Dirksen i aide said. I understand he I1 talked to the President directly.” The aide said a similar summons was issued to Les Arends, House Republic an whip, who was in his hometown of Melvin, 111.We have no more information about the crisis than what we have learned from news reports,” the aide said.i