KRXI FOX 11 Reno - Search Results The following is an archived video story. The text content of that video story is available below for reference. The original video has been deleted and is no longer available. Mike O’Callaghan Federal Medical Center locked downNELLIS AIR FORCE BASE, near LAS VEGAS - Just after 10 a.m. today, officials were notified there was an individual in the Mike OCallaghan Federal Medical Center parking lot threatening himself.As the situation unfolded, 99th Security Forces Squadron and Las Vegas Metropolitan Police officials responded.The hospital remains locked down, and officials ask that members not go near the medical center. Medical emergencies will be diverted to downtown Las Vegas until the situation is resolved.The Mike OCallaghan Federal Medical Center has been cordoned off and roads closed to limit traffic in the area, said Colonel Barry R. Cornish, 99th Air Base Wing commander, Were taking all precautions to protect our military members, families and patients.