Pegasus wasn’t to fight wars but to end them.
An overlook area of Pyramid Dam was used for the Entrance Gate to Project Pegasus.
The Southern California Edison Eastwood Powerhouse was used for the tunnel area of Project Pegasus.
Edwards Air Force Base was used for the hangar area of Project Pegasus, at least the parts that were not CGI enhanced.
Carol and Fury search for evidence from her past life in the monstrous records area of Project Pegasus.
The Southern Regional Library Facility at UCLA was used for the records area under Project pegasus. Thanks to MovieMaps for helping to find all these locations.
(Captain Marvel, 2019)