In a training exercise gone wrong, U.S. soldiers entered the wrong room at a Boston hotel Tuesday evening April 4. They mistakenly detained and interrogated a man who had no idea what was going on, authorities said. The Defense Department said it was attempting to simulate an investigation scenario with the assistance of the FBI. However, the trainees were sent to the wrong room around 10 p.m., said FBI spokesperson, Kristen Setera. The hotel guest, a Delta Air Lines pilot, was awakened, handcuffed and interrogated in the bathroom. After about 30 minutes it became clear there had been a mistake. “First and foremost, we’d like to extend our deepest apologies to the individual who was affected by the training exercise,” said Lt. Col. Mike Burns, director of public affairs for the U.S. Army Special Operations Command.