Marines of 3rd Platoon, Alpha Company, 1/3, spent much of their day July 8 training as pairs and four-man fire teams to make dynamic entries into doorways at the Range 1 "shoot house." - Marines of 3rd Platoon, Alpha Company, 1/3, spent much of their day July 8 training as pairs and four-man fire teams to make dynamic entries into doorways at the Range 1 "shoot house."