michael flynn had given what he calls substantial assistance in the russia investigation. so much so that mueller recommends that mueller serve no prison time. flynn has been interviewed we learned 19 times by federal investigators, providing them with first-hand interactions between the trump transition team and russian officials. mueller also says that flynn has helped with at least three investigations, two of which we don't know what he's referring to. >> the other big story in washington is the national day of mourning. the state funeral for george h.w. bush begins soon here in washington. all the living presidents, several world leaders will join the bush family for this memorial service. chris cuomo is here to cover it for us. we want to begin on the mueller revelations. joining us now. josh campbell, i want to start with you here.