I've been a fan since before CINEMAX got involved for the second series (considered the first in the U.S.), buying from Amazon UK.
This is one of the best action series on television. Excellent acting and solid scripts. You bond with the main characters. UK television has no reservations about killing off principal characters, so these guys do face the consequences of their high risk occupations, which adds to the realism
OK, they do take some poetic license with the realism, but its generally pretty solid. No shark jumping..