Here is another good fixed wing airplane that can serve double duty in DCS as either a surveillance aircraft or fire fighting. The P3 Orion!
Surprisingly I found the P3 as being quite capable in military form. This may very well be a good candidate for DCS.
Lockheed P-3C Orion Armament:
Bombs: 20,000 lb (9,000 kg)
Missiles: AGM-84 Harpoon, AGM-84E SLAM, the Standoff Land Attack Missile, AGM-65 Maverick
Sonar-buoys: 48
Torpedoes: MK-46 and MK-50
Miscellaneous: mines and depth charges