Hervic Company's High Altitude/SSTO Interceptor is at your disposal HAWX Squadron, even if you have had experience before.
HAWX Squadron, We have a new Aircraft available to you. The SSTO Interceptor FF-3S Saberfish.
Developed to catch spy planes and Rouge Ramjets, it has Rocket boosters meant to supply you with the thrust to get to the upper atmosphere, with special clearance of course.
It either replaces the MiG-25 or if you have the 2nd Plane pack v13 from the hawx forums you can also replace the E-767. the Pack will be uploaded here too.
For those in the Mecha/Anime/Spaceship Groups, it is from Mobile Suit Gundam. Google it.