INDIANAPOLIS, AUG. 7 -- More than a third of the United States athletes moved out of the Pan Am village, where competing athletes normally are housed during international competition, because the organizing committee here grossly underestimated the number of athletes participating in these games.

Approximately 300 members of the U.S. delegation moved into hotels and motels downtown, a short walking distance from many of the venues, including the Hoosier Dome.

Earlier in the day, organizing committee members nearly decided to send some of the foreign athletes to nearby Marion (Ind.) College but figured the Americans -- as hosts -- should be the ones displaced. "Hey, 18 days of cable and room service," one U.S. Olympian said. "I can live with that. When do we check in?" Modern comforts aside, the committee also felt it would be easier on security to keep the visiting athletes in one area.

Fort Benjamin Harrison, which is serving as the village, is equipped to handle about 4,900 athletes. But more than 6,000 have already shown up, meaning many had to stay in hotels on Thursday night while the Pan Am officials scrambled.

Ted Boehm, chairman of the organizing comittee, said his organization was told months ago to expect 6,000. "But 6,000 was never believed by us to be a realistic estimate," he said today. "No prior games have had that kind of turnout. We figured 5,000 maximum."

The Chilean delegation to the Games was officially greeted on Wednesday. But the State Department's delay in granting a visa to one of Chile's athletes left that nation uncertain if it would remain in the competition.

Late tonight, the Chilean delegation, headed by its Olympic committee chairman, Juan Carlos Asguep, was still awaiting word on whether the U.S. would grant a visa to Francisco Zuniga, an ex-secret police officer who is part of Chile's shooting team.

The State Department decided to review Zuniga after newspaper reports identified him as a member of the National Intelligence Central. He had also been described as part of an anti-riot unit that attacked a group of journalists and demonstrators during a street protest in 1982.

This afternoon, Pan Am president Mario Vasquez-Rana supported the Chileans, saying through an interpreter, "It's a very sad thing . . . not to give a visa to an athlete because it is the obligation of the country to give it to him. It is one of the things we requested of the organizing committee {in Indianapolis} when the games were being organized . . . He {Asguep} wanted to withdraw his delegation, and I would do the same thing . . . "

Indiana basketball player Keith Smart, on rooming with former Naval Academy star David Robinson:

"He talks in his sleep. He talks about basketball. I'll hear him in the middle of the night saying, 'Pass the ball . . . No shoot.' I can't tell you what else he talks about . . . "