Air guns represent the oldest pneumatic technology, dating back to the 16th century in Europe. Learn how celebrated explorers Lewis and Clark demonstrated superior firepower on their way west, and trace the evolution of today's air gun that are used for hunting and competitive shooting. Then get to know Friends of NRA. Since its inception in 1992, the program has held more than 16,000 events and reached more than 2.8 million attendees. Learn why 2013 proved to be its biggest year yet—raising more than $32 million—and what impact those funds will have on the future of shooting sports.