From CNN.

Drone activity caused officials to close airspace over one of the United States’ most critical Air Force bases for almost four hours late Friday and early Saturday, according to a base spokesperson and a Notice to Airmen posted on a federal website. Bob Purtiman, chief of public affairs for the 88th Air Base Wing at Wright-Patterson Air Force Base in Ohio, said that the airspace remained restricted for approximately four hours while authorities monitored the situation, CNN affiliate WHIO reported. #CNN #News