Mitch Landrieu, mayor of New Orleans, speaks to an audience composed of military and civilian organizations at Gallier Hall, Jan. 29, 2015. The mayor spoke of his efforts to combat homelessness among veterans in New Orleans. President Barack Obama praised Landrieu during the U.S. Conference of Mayors the week prior for making New Orleans one of the first major cities to eliminate veteran homelessness. (U.S. Marine Corps photo by Cpl. Ian Leones)