No, photographer Marco Sitzia isn’t holding a missile launcher, but rather the Sigma EX DG lens, and without a tripod. It “covers widely-used focal lengths from 200mm to 500mm and has a large aperture of F2.8 throughout the entire zoom range.” Unfortunately, this camera accessory is priced at a hefty $28,999. Product page.
Photographer Marco Sitzia rocks the Canon EOS-1Ds Mark III with a monstrous Sigma 200-500mm f/2.8 EX DG lens. For reference, the Sigma weighs about 35 pounds.