Sean watched as the guy decided to help out, sounding motivated to do so. He wanted to hide away from the threat and the gate was the only option, besides the risk of going to the back door and exiting the shop there. He heard the gunshots getting closer to the shop and he was scared shit. What if they see the gate closing? What if they fired at the shop? 

What if... What if he dies?

He watched the guy rushing to the gate as bullets hit the shop, shattered shelves and trinkets around the shop. Sean ducked to avoid bullets and helped out the guy in closing the gate. The gate smashed down as the other guy locked it up, making such that someone doesn't just pull the thing up. After that was done, Sean walked towards the nearby wall and collapsed onto it. He was sitting on the ground, breathing heavily as he heard the gunshots next to them.

Sean closed his eyes for a second to think of what he is going to do next. He might have to stay at the shop for a while as he isn't going to go outside right this second. It was silent until the guy with the tattoos asked a question, "What the fuck is going on?". Sean was still breathing heavily as he stool up and walked towards the counter.

"Well, the whole island is under attack. And that's all I know so far." Sean said he was sitting on the counter now as he sighed and said, "I am such that the police are as confused as everyone else is.".