Deep shadows:

Treat all non-blocking terrain as hindering terrain for line of fire purposes. Characters with range values greater than 6 have range values of 6 instead, and range values can't be modified to a value more than 6. All powers, abilities, and effects able to effect characters more than 6 squares away instead affect characters up to 6 squares away.
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CALL IN THE AIR STRIKE: Once per game, give Thunderbolt Ross a double power action. Choose a square anywhere on the map. Modify General Thunderbolt Ross' attack value by +3 and make a ranged combat attack that does not target, and compare the result to each character occupying the chosen square or a square adjacent to the chosen square. A hit character occupying the chosen square is dealt 3 damage. Other hit characters are dealt 2 damage that causes knock back from the chosen square. Destroy all walls and squares of blocking terrain in or adjacent to the chosen square.

does deep shadows affect ross's air strike range?

I would say no because it says "a square anywhere on the map" and not "with in range" or any such limitation.

Yes. Deep Shadows makes it so that no effect can affect any character more than 6 squares from the originating character.