Simplify the following text for a Grade 10 native English-speaking person.
Original: When the Navy gave up its airship ambitions and moved most of its West Coast operations to San Diego , NACA ( the National Advisory Committee for Aeronautics , forerunner of NASA ) took over portions of Moffett for aeronautics research .
Simplified: When the Navy moved most of its West Coast operations to San Diego , NASA took over portions of Moffett for aeronautics research .