Yup, I'd say it's pretty standard. Alpha team moves while bravo lays down covering fire. Once in place, Alpha team starts laying cover fire for Bravo team to move.

I recall going over the drill in Basic training...

Of course, after that, I was a total REMF, so such things became little more than "blocks of instruction" during classroom sessions, complete with powerpoint slides, bullet points, and maybe even a couple of audio clips.

Oh yeah... I was hardcore.