Some AIRCRAFT models have 'Hover' listed in their abilities. When you are instructed to Declare Battle Formations, before doing anything else, you must first declare which models from your army with this ability will be in Hover mode.

If a model is in Hover mode,  then until the end of the battle, its Move characteristic is changed to 20", it loses the AIRCRAFT keyword and it loses all associated rules for being an AlRCRAFT model. Models in Hover mode do not start the battle in Reserves, but you can choose to place them into Strategic Reserves following the normal rules if you wish.

Deadly Demise

Some models have 'Deadly Demise x' listed in their abilities. When such a model is destroyed, roll one D6 before removing it from play (if such a model is a TRANSPORT, roll before any embarked models disembark). On a 6, each unit within 6" of that model suffers a number of mortal wounds denoted by 'x' (if this is a random number, roll separately for each unit within 6").

Profiles:

Unit	M	T	SV	W	LD	OC
Grey Knights Thunderhawk Gunship	20+"	12	2+	30	6+	0

Transport
Grey Knights Thunderhawk Gunship: This model has a transport capacity of 30 Grey Knights Infantry models. Each Terminator model takes up the space of 2 models.

Abilities
Damaged: 1-10 Wounds Remaining: While this model has 1-10 wounds remaining, each time this model makes an attack, subtract 1 from the Hit roll.
Aerial Assault: Each time a unit with the Deep Strike ability disembarks from this model after it has made a Normal move, that unit is still eligible to declare a charge this turn

Melee Weapons	Range	A	WS	S	AP	D	Keywords
Armored Hull	Melee	6	4+	8	0	1	-

Modifiers:

append name (Battle-hardened)

and

16+ selections of Experience Points in self (recursive)

30- selections of Experience Points in self (recursive)