The B-1B Lancer is a supersonic, variable-sweep wing, strategic bomber developed by Rockwell International (now Boeing) for the United States Air Force (USAF). Its primary objectives: *Combat Capabilities* 1. *Strategic bombing*: Delivers conventional and nuclear munitions against high-value targets. 2. *Close Air Support (CAS)*: Supports ground troops with precision-guided munitions. 3. *Theater strike*: Conducts regional military operations. 4. *Deterrence*: Demonstrates military presence and capability. *Advanced Features* 1. *Variable-sweep wings*: Optimizes performance for various flight regimes. 2. *Low-altitude penetration*: Evades radar detection. 3. *Advanced radar and navigation systems*: Enhances targeting and navigation. 4. *Electronic countermeasures*: Disrupts enemy defenses. 5. *Internal weapons bay*: Carries various munitions. *Mission Profiles* 1. Strategic bombing missions 2. Close Air Support (CAS) 3. Theater strike operations 4. Reconnaissance 5. Deterrence patrols *Specifications* 1. *Length*: 146 feet (44.5 meters) 2. *Wingspan*: 137 feet (41.8 meters) extended, 79 feet (24.1 meters) swept 3. *Height*: 34 feet (10.4 meters) 4. *Weight*: Approximately 190,000 pounds (86,183 kg) 5. *Speed*: Mach 2+ (over 1,900 mph) 6. *Range*: Over 5,979 miles (9,624 km) 7. *Service ceiling*: 60,000 feet (18,288 meters) *Operational History* 1. First flight: December 1974 2. Entered service: 1985 3. Participated in: - Operation Desert Fox (1998) - Operation Enduring Freedom (2001) - Operation Iraqi Freedom (2003) - Ongoing global operations *Upgrades and Variants* 1. *B-1A*: Initial production model 2. *B-1B*: Upgraded with improved radar, navigation, and defensive systems 3. *B-1R*: Proposed upgrade with advanced radar and communication systems (cancelled) The B-1B Lancer's versatility, speed, and payload capacity make it a vital component of the USAF's strategic bomber fleet.