An aerial view shows downtown Port-au-Prince, Haiti, Jan. 17, 2010. Makeshift shelters are being erected in open locations throughout the city in the aftermath of the devastating earthquake that struck the country Jan. 12, 2010. A Jan. 18, 2010, air delivery mission of supplies was directed at trying to find the most expedient method of deploying supplies to victims and relief workers. (DOD photo/Master Sgt. Jeremy Lock)