Rohan was angry because the security guards weren't listening to his orders, and the head security guard had stopped everyone.
The guards stood silently, looking at each other, not knowing what to do.
"You're all fired!" Rohan shouted.
Rohan glared at the guards because they didn't follow his orders. Some guards who were there when Mr. Harry introduced Kevin remained calm, but those who didn't know about Kevin glared at Nicol. Because of him, they had now lost their jobs.
They didn't understand why Nicol would stop them. They must listen to whatever the manager says if they want to continue working here.
"What's going on here?" Mr. Harry asked loudly as he walked towards everyone.
Everyone turned towards Mr. Harry. Rohan sees this as a chance to impress Emma by acting as her shining knight, who is trying to save her from people trying to hurt her. He ran towards Mr. Harry.