Sure, although a single tier 3 would be quite a challenge... like living nightmare-fuel for those guys (since each person would be on the threat-level of a complete Hind-gunship).
Tier 5.... that's like gundam-shit of night-terror.

Just be glad:
1. It's only a squad, [url=http://3.bp.blogspot.com/-dvT51DqjCJk/UA4SvXvCavI/AAAAAAAANHs/l5iUvx3s69A/s1600/Chinese+ZBD-08+502+Infantry+Fighting+Vehicle+%2528IFV%2529+pla+army+heavy+export+%25281%2529.jpg]out of an entire army[/url].

2. I won't be calling-in air support (presumably the air-war is too hotly contested for ordnance to be directed towards ground).

3. Unlike 'The Predator' I'll refrain from pressing the nuclear 'easy button'.

Also, keep in mind their hit-rate isn't 100%, [i]although a near-miss from an RPG usually does escalate pucker-factor up to 11[/I].
-Some of those grenades are smoke/illum