They reach their destination

Finally they reached the public swimming area. They parked near the entrance and walked towards the changing rooms.
"Come on, Klaus, let's go inside" said Walter. "You stay here Mr Martens, in case we need you for backup."
"Are you sure you don't want me to come with you, Klaus?" asked Mr Martens.
"No, I'm sure," Klaus said. "We will be fine. Stay here, please."
"Alright, I'll wait for you in my car." Mr Martens said.
"Thanks" said Klaus.
They entered the changing room, and Klaus went inside a private locker for the girls.