Maine shooter's threats reported to police, but elusive suspect remains at large.

Police in Maine were alerted last month about "veiled threats" made by Robert Card, the U.S. Army reservist who carried out the state's worst mass shooting. Despite the alert, law enforcement was unable to locate Card after conducting patrols and visiting his home. The FBI stated that Card had not been on their radar, and there were questions about what could have been done to prevent the massacre. Card had a history of mental illness, but there was no evidence of involuntary commitment. The case highlights missed red flags and the need for better coordination between military, police, and mental health professionals.