Engine upgrades have already delivered improved fuel economy, increased vehicle range, and increased durability. Honeywell has been awarded a $1.1 billion, five-year base requirements contract by the US Army to extend its support for operational readiness of the M1 Abrams MBT. The Total Integrated Engine Revitalization (TIGER) III contract includes an initial parts delivery order worth about $125 million for the AGT1500 gas turbine engine (pictured). Dating from 2005, the TIGER programme is intended to improve AGT1500 operations and cut service costs, as a collaborative effort between Honeywell and the US Army (via its Abrams Project Management Office, the Tank-automotive and Armaments Command and the Anniston Army Depot).