Among these are:

Acoustic Weapons to incapacitate an enemy.

Microwave Weapons to heat from the inside.
Full Story on all weapons here:
http://www.heart7.net/mcf/us-news07-07-97.htm

This is a very small civilian version for a 12 G shotgun, of a weapon developed in the VietNam erra. It is essentially a shotshell loaded with thermite, that projects a long stream of extremely high temperature combusting aluminum and magnesium. In this shotgun form, it is relatively non-damaging, and is used for riot control as it produces such a bright light at night.
When fired, the Dragon's Breath compounds react together and burning metals are thrusted down range 90 to 110 yards. The blast is tremendous. At night, you'll experience a temporary white-out effect!
During the Vietnam era, the military had developed a similar round for psychological warfare. However, the round burned all organic matter in its' path and was removed from use as being too inhumane for combat use.
http://www.azweapons.com/FUNAMMOmain.html
Credit DR: