sentences:  On 17 January 2008, Lockheed Martin offered a customized version of the F-16, the F-16IN "Super Viper" for the Indian MMRCA contract.The F-16IN, which is similar to the F-16 Block 60, will be a 4.5 generation aircraft.Lockheed Martin has stated that it will be the most advanced F-16 variant developed.