‘Visibility Machines’

Opening reception for Gallery 400 exhibit, which explores the roles artists Harun Farocki and Trevor Paglen play as observers of the global military industrial complex. Investigating forms of military surveillance, espionage, war-making and weaponry, the artists examine the  ways in which military projects have transformed and politicized our relationship to images and the realities they appear to represent. Hours: 10 a.m. to 6 p.m. Tuesday through Friday; noon to 6 p.m. Saturday, through March 7. Free admission.