Speaking of that fact that he's shooting a lot of bullets, Booker is starting to run out. His shotgun already loads very slowly, but it'll go a lot more slowly now that he's down to two shots. He huffs and interrupts their pleasant conversation as he slips the gun back into its holster.

"I'm gonna need to get us some new guns. Take these-" he hands over one last round of pistol bullets, "-and clear out your mini-dimensions while the shield's down. And try not to get shot." And he not-so-patiently waits for Adachi to load his gun before the shield slips off.