India and the United States Air Force on Monday displayed their air prowess at the inaugural of the 6-day joint exercises at Agra Air Base. The exercise is aimed at enhancing their knowledge levels.Briefing reporters, Group Captain Mathews Mammen gave the details of the exercise.<br/><br/>In his opening remarks, the US Ambassador to India Timothy J. Roemer said that a strong strategic relationship between the United States and India is crucial to address regional security challenges.