Vivisection in film of the winged animal that has surpassed man in a mystery: how to connect two points for communication. In the digital era of communications, it has still not been revealed how carrier pigeons manage to get their bearings and join programmed points, although one of them changes location. For this reason, in spiteof progress, armies always use them, even giving them a greater guarantee of security than encrypted e-mails. The artist, Katherin MacInnis, portrays the armies through a marathon of palpitating archive images in black and white, a tribute to the ight of these heroines of the air, like another tribute to the unknown soldier.