Vietnam Era Military flying in FSX with CS Weapon, can be a rewarding
experience, since the Vietnam War scenery already exists !... (http://vietnamwar.project.free.fr/index.html)

Many and of different type & task Military planes & helicopters can be flown
over there "CS Weaponed" in a highly immersive virtual environment !
Since scenery is already there, only the targets have to be added !... Some examples :

Striking targets at Than Hoa bridge :              

http://www.youtube.com/watch?v=rMJgeGi0TTc

Above Mission, starts on Carrier :

http://www.youtube.com/watch?v=qm1MJ3MHs38

Da Nang AirBase :

http://www.youtube.com/watch?v=5LX6sokW8-U

I think I've "discovered" my "Sim in sim" Military flying simming...
:)