you can modify the selective suicide or kill to say whatever you would like.

This line is buried in the middle of the code:
0x0081f998 0x33c8fffd

You can edit the last two letters to change it form Fall to Death to a bunch of other stuff. FD is the code for Fall to Death, here are all the other 2 letter codes you can use:

9C= Explosion
FD= Fall to death
FC= Ran over
9B= (Unlocalized)
9A= Bomb
DA= INTEL
C7= High Scope
C4= Thermal Scope
D3= Laser sight
A3= Supply Drop
98= Shatchel Charge
D6= Medkit
A2= Airstrike
00= Nothing (No text but still gets kill)

So like the line would change to this for AIRSTRIKE:
0x0081f998 0x33c8ffA2

And then in game it would say "U.BeeN.StryKeD commits suicide with AIRSTRIKE".

You can do it to selective kills too, just find that same line and edit it. i posted this somewhere else, i think in the FTB2 codes section.