Militia activity at the United States-Mexico border grows amid perceptions of insecurity
SANTA CRUZ COUNTY, Ariz. — The border wall arches over the steep slopes of the Sonoran Desert, a vast row of brown steel slats jutting up from the rugged terrain, rippling with heat in the afternoon sun. A man dressed head to toe in camouflage and carrying an AR-style rifle huffs and puffs his way up one hill and scans the horizon.Over the radio, his comrades in Arizona Border Recon, a civilian patrol group, report finding 31 migrants near a spot where the wall abruptly ends. The remote area west of Nogales, Ariz.,…