To make the abstract real with his series Blue Sky Days, Van Houtryve mounted his DSLR on a quadcopter he bought online. He flew it over weddings, funerals, groups in prayer, and people exercising in public places—circumstances in which people have been killed by U.S. drone strikes abroad. “We’re told that the drone program saves American lives, and that civilian casualties are avoided with the surgical precision [of the technology]. The former claim is true, the latter is seriously in doubt,” says Van Houtryve.