Hide in plain sight, strike from within, concealment and evasion, take advantage and overwhelm ordinary systems, concentrate force then dissipate, textbook AQ.
They could use a small boat loaded with explosives to try and take out a ferry, and the Coast Guard boat could definately take out such a boat, or even a small plane I suspect.
Nuclear Engineer, known to hang in Phoenix, and Canada. Names, aliases: Adnan G. El Shukri Jumah, Abu Arif, Ja'far Al-Tayar, Jaffar Al-Tayyar, Jafar Tayar, Jaafar Al-Tayyar.