those bridles are pretty complicated, for a simple system, that is
when an early jet like the Phantom and Skyhawk, etc, are all hooked up ready for launch, they look almost like they are tied down to the deck for storage
the Bridle attached as Bernie said, each end on a heavy hook on the aircraft,,,,,looped over the Cat Shuttle,,,,,then there is a tether attached to each Bridle,,,,,,,with the hold back cable attached with it's aircraft specific shear bolt,,,,,,,,at launch, the shear bolt breaks, leaving that cable behind for the deck crew to remove from the slot it's attached to next to the Cat Track,,,,,,a new one is used each launch, and each is inspected before another use,,,,,,,the Bridle falls away from the aircraft, and is caught around the Van Velm Bridle Arrestor (those horns at the front of the carrier),,,,the netting is for catching a crewman that may fall, just like around the rest of the flight deck,,,,,the Bridle is then picked up, and also set aside,,,,,a different Bridle used for the next launch
we used to poke fun at the "dumb lil Dixie Cup yellow shirts",,,,,,but, those kids had to hook the hold back into the correct slot, with the correct bolt,,,,,and hook the Bridle and tether up,,,,,,,and retrieve everything, and sort those out for inspection and re use,,,,,,,,,for every different aircraft and launch combination,,,,,,,all while the ship steams into the wind at 30+ knots, with jets and props all over the place to hurt them in one way or another,,,,,,,oh, and with all the people yelling info to them as they went about their business,,,,,,,,only one or two years out of high school
nothing but respect for those kids from me (and the poor little hook runners, also),,,,,,,they had guts, that's for sure
Tommy did a write up on some of this during a similar convo on another site
http://thanlont.blogspot.com/
Rex