(Portland, OR) -- A man is facing charges after allegedly slashing at a security guard with a knife. Police arrested 40-year-old Aaron Deatley of Vancouver for the incident Friday afternoon outside an outdoor retailer off North Hayden Meadows Drive. Police say Deatley cut the security guard on the forearm with a knife following a brief struggle. The security guard is expected to survive. Deatley was arrested on charges of first-degree robbery and second-degree assault.