Members of the Tactical Response Force clear the theater during an active shooter exercise at F.E. Warren Air Force Base on Thursday in Cheyenne. "We hope that these types of events never happen, but we're going to do everything in our power to be prepared" Glenn Robertson, Chief of Media Relations, 90th Missile Wing Public Affairs said.

Members of the Tactical Response Force clear the theater during an active shooter exercise at F.E. Warren Air Force Base on Thursday in Cheyenne. "We hope that these types of events never happen, but we're going to do everything in our power to be prepared" Glenn Robertson, Chief of Media Relations, 90th Missile Wing Public Affairs said.

Members of the Tactical Response Force clear the theater during an active shooter exercise at F.E. Warren Air Force Base on Thursday in Cheyenne. "We hope that these types of events never happen, but we're going to do everything in our power to be prepared" Glenn Robertson, Chief of Media Relations, 90th Missile Wing Public Affairs said.

An actor stands in the theater with a fake gunshot wound during an active shooter exercise at F.E. Warren Air Force Base on Thursday in Cheyenne. "We hope that these types of events never happen, but we're going to do everything in our power to be prepared" Glenn Robertson, Chief of Media Relations, 90th Missile Wing Public Affairs said.

Members of the Tactical Response Force clear the theater during an active shooter exercise at F.E. Warren Air Force Base on Thursday in Cheyenne. "We hope that these types of events never happen, but we're going to do everything in our power to be prepared" Glenn Robertson, Chief of Media Relations, 90th Missile Wing Public Affairs said.

A bullet casing on the floor in the theater during an active shooter exercise at F.E. Warren Air Force Base on Thursday in Cheyenne. "We hope that these types of events never happen, but we're going to do everything in our power to be prepared" Glenn Robertson, Chief of Media Relations, 90th Missile Wing Public Affairs said.

Members of the Tactical Response Force clear the theater during an active shooter exercise at F.E. Warren Air Force Base on Thursday in Cheyenne. "We hope that these types of events never happen, but we're going to do everything in our power to be prepared" Glenn Robertson, Chief of Media Relations, 90th Missile Wing Public Affairs said.

Members of the Tactical Response Force detain the shooter after clearing the theater during an active shooter exercise at F.E. Warren Air Force Base on Thursday in Cheyenne. The exercise included people acting as injured and USAF EMS was present to complete triage.

EMS treats a wounded Security Forces Member during an active shooter exercise at F.E. Warren Air Force Base on Thursday in Cheyenne. The exercise included people acting as injured and USAF EMS was present to complete triage.

Members of the Tactical Response Force detain the shooter after clearing the theater during an active shooter exercise at F.E. Warren Air Force Base on Thursday in Cheyenne. The exercise included people acting as injured and USAF EMS was present to complete triage.