So as not to derail Neals Raven Guard any further I thought I'd start a seperate thread.
Before going into the tempest which is apparently a 'marine fighter' I have to ask why the marines don't simply get an atmospheric fighter? Ok no space born one so not to break the fight the imperium restriction. But a one man pure interceptor wouldn't be breaking the fluff surely? As it is any alien race with aircraft and bunkers would defeat any marine force turning up on the planet.
Anyway one Tempest

Armed with a twin missile launcher (on 'AA mount') and assault cannon.
As Niel points out the weapons are nigh identical to the typhoon. The armour makes up for the lack of 2nd crewman and then the only difference is the AA mount.
If I were stating it to be a very odd mobile AA piece I'd make it into its own formation, probably 4 strong, speed 35cm, Save 4+, LV, CC6+, FF5+, assault cannon and twin AA missile launcher 30cm AP4+/AT5+/AA6+ (alternatively to make it harder to use but harder hitting 30cm AP4+/AT5+/AA5+ forward arc). Cost is tricky but I guess in the 200-250 range. (And yes, no scout for all the resons below!)
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