I would like to buy a bag in which I can securely store my lenses and back up cameras during weddings. What do you use? I know assistant is the solution who can watch your bag but a lot of time is is just not feasable. Also, I can carry all the cameras and the lenses on me but it is impractical a lot of times... What I am looking for is something which is hard to take from the without somebody noticing it and I can lock it. Somebody suggested that I can get bags which have an alarm... It would be great if I didn't have to worry about my stuff all the time. I appreciate your help!