What does Joey tell Paul about the incident when his brother was killed?

He says the first thing Mike always did upon arriving at home was to take off his shoes. Joey says that even though he'd known Mike was dead at the football field, he'd tried to do the only thing he could think of that might make a difference - help Mike get his shoes off so that he'd be more comfortable. Joey says he'd know it wouldn't matter, even at that moment, but that he'd wanted to do something.