El Al security does perimeter checks as well at LAX
and we have spoken to them a number of times. This is done for every arrival and departure of an El Al flight so it is nothing new. The Airport Police and LAPD have parked next to us numerous times in our shooting areas when a flight arrives or departs and again we have been told it is just routine.
Since the shootings at the El Al ticket counter July 4th, 2002, security is even tighter in the Bradley Terminal when an El Al aircraft is at the gate, so I'm not surprised you were questioned.
Don't feel like you were singled out because you were spotting, just pay attention to what airlines are at the gate and if you see El Al there, just use a little common sense and go to another area until the flight departs and you won't be questioned.
I've been taking photos and watching aircraft all my life at LAX
and yes things have changed greatly over the years. Take it from an LAX
local, go to another location to spot, don't hang around in the Bradley Terminal to spot unless you are leaving on a flight, the Theme Restaurant is a good choice as you can see the entire airport from there.