Alice, Sheryl, Dash and Nita appeared during the 'Oh Say Can you Stream' charity fundraiser which was put together by Megadeth's Dave Ellefson
The entire thing ran for 9hrs, 26mins, so Good luck with finding them!
OK - you have twisted my arm!
Nita is featured at 4:36:20 and Alice and Sheryl are at 4:49:10