Puck shoot etiquette

Recent puckshoot: two dudes plus goalie set up a 2 on 0 drill across the ice (along the center ice line). Basically they set up a third goal in front of the booth where the time keeper sits. Skating pretty hard, shooting full force etc. is this normal do you say anything ? I was skating across their mini practice and gave them a look but they looked pretty hardcore so I let it be to avoid confrontation. Any opinions?