Capt. Michael Gagnon takes notes on the debriefing at Patrol Base Alcatraz, Afghanistan, on the conclusion of a successful mission, Oct. 21. Gagnon, a native of Oxford, Mass., commands a team of roughly 20 men dubbed “Task Force Nomad.” Over the next several weeks, the task force, a subset of Marine Wing Support Squadron 371, will construct or improve helicopter landing zones along the Helmand River valley in southwestern Afghanistan. - Capt. Michael Gagnon takes notes on the debriefing at Patrol Base Alcatraz, Afghanistan, on the conclusion of a successful mission, Oct. 21. Gagnon, a native of Oxford, Mass., commands a team of roughly 20 men dubbed “Task Force Nomad.” Over the next several weeks, the task force, a subset of Marine Wing Support Squadron 371, will construct or improve helicopter landing zones along the Helmand River valley in southwestern Afghanistan.