Lance Cpl. Lester Echols chucks an M69 practice grenade from a training bay on Range 109 here. Twenty-four Marines with Marine Air Support Squadron 3 of 3rd Marine Aircraft Wing here conducted live-fire grenade training here. Echols is an air support operator with the support squadron here. - Lance Cpl. Lester Echols chucks an M69 practice grenade from a training bay on Range 109 here. Twenty-four Marines with Marine Air Support Squadron 3 of 3rd Marine Aircraft Wing here conducted live-fire grenade training here. Echols is an air support operator with the support squadron here.