Marvel has early Alpha Flight [1979 to 1983]; the Byrne era [1983 to 1985]; the Mantlo era (the longest of era of them all); the Hudnall era (trying to make lemonade out of lemons)...
Marvel has New Avengers # 16, with the whole-sale slaughter of Alpha Flight and Mailman Mike given the "Guardian" suit.
Marvel has "Heather" blasting the brains out of her cousins (volume 4) and "Mac", Aurora, Judd, and Snowbird (!) robbing a bank.
Marvel now has Carol Danvers leading Alpha Flight...
It seems to me, and I may be wrong, that Alpha Flight is already gone.