Usually close support is thought to be only carried out by fighter-bombers or dedicated ground-attack aircraft, such as the A-10 Thunderbolt II ("Warthog") or Su-25 ("Frogfoot"), but even large high-altitude bombers have successfully filled close support roles using precision-guided munitions. During Operation Enduring Freedom, the lack of fighter aircraft forced military planners to rely heavily on US bombers, particularly the B-1B Lancer, to fill the CAS role. Bomber CAS, relying mainly on GPS guided weapons and laser-guided JDAMs has evolved into a devastating tactical employment methodology and has changed US doctrinal thinking regarding CAS in general. With significantly longer loiter times, range, and weapon capacity, bombers can be deployed to bases outside of the immediate battlefield area, with 12-hour missions being commonplace since 2001. After the initial collapse of the Taliban regime in Afghanistan, airfields in Afghanistan became available for continuing operations against the Taliban and Al-Qaeda. This resulted in a great number of CAS operations being undertaken by aircraft from Belgium (F-16 Fighting Falcon), Denmark (F-16), France (Mirage 2000D), the Netherlands (F-16), Norway (F-16), the United Kingdom (Harrier GR7s, GR9s and Tornado GR4s) and the United States (A-10, F-16, AV-8B Harrier II, F-15E Strike Eagle, F/A-18 Hornet, F/A-18E/F Super Hornet, UH-1Y Venom).