Plot: In this mission, you play as Victor Anderson. One day, Victor, James, Jack and Willy decided to take over Area 51, but it wasn't that easy. You need to go to Area 51 and capture it, but the mission is not so easy.
Installation: Throw the DYOM5.dat file into the GTA San Andreas User Files folder.
Miscellaneous: Be careful when completing the mission, otherwise you may not complete it.