30 years ago I was a crane operator at a large salvage yard. I was about half way completed the loading of a very sharp NEW looking MAC truck when everyone decided to go to lunch. Well, this was a rather very large boom crane which had to have all 4 stabilizers down for any operation. I shut her down and went for lunch with the boys. During this time I wasn't told, but some repair dudes came and removed one of my stabilizers for repairs without telling anyone. On returning, and of course from my line of sight I can't see the legs. (Hay I left them down) Well, I went to swing the boom with a load about 1 ton close by the truck and........(**** Happen's). The crane fell over and the boom took out the new 100,000 truck as the load also fell and crushed the bed. The cranes main boom was ripped from it's joint and about 200 gallions of hot hydraulics went everywhere. The cab I was in was like a little coffin, but all was fine (saved by a gas tank at that!!). I never got into ****, they blamed the repair company for not tagging or stating anything. However...."I" think through all this, that's why the walkaround your machine first law was invented :roll: