Corsair bale strike band interrogation

So I was reading about corsair units and strategy on 1d4chan.org
and I read about giving bale strike band the jet back upgrade so they can be more mobile
AND get relentless but I cannot find that rule anywhere inside...

So I would appreciate some clarifications


thank you all in advance

The description of Jet Pack units in the 7th ed rules :

"Jet Pack units have the Bulky, Deep Strike and Relentless special rules"

So yeah, Balestrikes with Jet Packs are everything Scourges wish they were.

Corsair are pretty much what we wish dark eldar were :/... should have look inside the rule book before asking

In addition to what Hydranixx mentioned:

Jet packs also grant a 2d6 movement in the assault phase if you aren't assaulting (like a jet bike).  This allows for what is commonly referred to as a JSJ or Jump, shoot, jump maneuver.  As the name implies, units with jet packs can move over sight blocking terrain or cover to fire - then (usually) move back before the enemy has a chance to respond.

Additionally jet packs adds 6" to the reckless abandon move.  With this bonus, any corsair infantry becomes Extremely difficult to successfully charge because they get to move 6+d6" immediately after firing overwatch.

All this, relentless, and an improved armor save for 5 points makes the jet pack pretty much standard equipment for balestrikes.

sweeeeet