Raising the alert level of the British Air Force base for a possible security threat.
A US official announced the movement of US equipment and aircraft, "The security alert level at two Air Bases and Rafah Larcath, both of which are used by the US military, has risen to the level of FPCON Charlie.
This alert level is activated when security information indicates the possibility of some terrorist act. The military website Warzone previously reported on these security changes.