airport disapeared after spending gold Port Said Game #1392652 Pakistan

I spent gold to build then speed up airport till built. landed planes and send fights on patrol to block/fight tacs coming in from Yugo to Alexandria. Suddenly my planes all turned around and my airport gone... not attacked... just gone. My entire airforce grounded while his tacs slipped by or bombed me. I had to re-build with gold AGAIN from scratch. not damage... the airport completely disappeared.

Kenton Riggs