Top Secret Plane & "The Big One" Weapon Pack
     To  unlock  the  Top  Secret plane and "The Big One" weapon pack,
just complete both of the Pilot and Ace bonus objectives for the final
mission (Mission 4.5-The Final Count Down).

     "The  Big  One" weapon pack is the fourth weapon pack for the Top
Secret  plane  and  includes  the  A-SLAMR  superweapon.  This weapon,
however, does not recharge after being fired.


Top Secret Plane (SR-71 Blackbird)
     Successfully complete the Pilot bonus objective.

The Big One (SR-71 Blackbird's 4th Weapon Pack)
     Successfully complete the Ace bonus objective.