“Altitude” (*** out of four) was a tense action thriller about a tough female F.B.I. agent (Denise Richards) who is onboard an airplane when it is taken over by hijackers (led by Dolph Lundgren) and she has to defeat the hijackers, save the passengers, and also uncover why they are attempting to hijack the plane in the first place. Nonstop action thriller actually recalls “Nonstop” and also “Passenger 57” but is filled with action and slick visual effects, and features probably Richards’ best performance ever. Very well-directed by Alex Merkin.