"I want you to put air in his lungs so he doesn't die of oxygen deprivation," Mello said flatly, lifting his head. Was that so hard to understand? "I'd do it myself, but someone has to listen to his lungs, and you don't know what to listen for." Did this guy want his friend to live, or not? Mello couldn't waste time justifying every little detail. He knew what to do, the other man didn't. That should have been enough.