Marine Corps officials ordered a two-day stand-down of all aircraft inside and outside the U.S. on Monday after an F-35 jet disappeared in South Carolina.

The Pentagon said in a statement that the move would allow units “to discuss aviation safety matters and best practices.”

The pause will give leaders time “to ensure the service is maintaining operational standardization of combat-ready aircraft with well-prepared pilots and crews.”

“During the safety stand down, aviation commanders will lead discussions with their Marines focusing on the fundamentals of safe flight operations, ground safety, maintenance and flight procedures, and maintaining combat readiness,” the statement said.