Lowered enemy aircraft speed for T-55 version

Fixed bug with waves starting immediately.

Gave 8 seats for T-55 mission version, with 4 aircraft

Made title more descriptive

Added T-55 scenario

Fixed wave 1 ending too early and added higher spawn chance for cruisers

Fixed waves not starting at 1

Added armored column and cruiser group pop-ups, shortened some audio alerts, decreased prep time between waves

Re-saved mission file and repaired campaign structure in attempt to fix starting audio (worked)

Re-uploaded mp3 files to attempt to fix audio still not playing