Protesters have gathered at the Iowa Air National Guard Base in Des Moines to decry the use of drones in war.
The Saturday morning rally was organized by the Midwest Veterans for Peace and Catholic Workers. Organizers, including former Des Moines priest Frank Cordaro, described the rally as a civil disobedience action and expected some participants to be arrested.
The protesters are rallying against the use of unmanned drones to carry out military strikes.
Critics have charged that drone strikes cause widespread civilian deaths and are conducted with inadequate oversight. Defense analysts say drones are the future of warfare.