As a sch and our awesome mana management I would promote that if you see another group dying - go ahead and run over and pick them up/raise them. (Especially their healers.) It can save a wipe from happening.
Also don't be greedy on heals. Heal other tanks.

I actually was in a group today on my dd and a SCH healer in my PT was joking that the other grps tank was dying on bone dragon. (He was MTing it.) Please just because your group is not doing anything, do heal others. Especially on behemoth. v.v;
Makes me want to be on my healer 24/7 to help other groups live on. lol