I was hoping that I wouldn't get called before I went on my rest cycle on Tuesday morning at 7 am, but I got a call for a dog catch at 2 am. When I got down to the depot my engineer informed me that we had been called to "pilot" Amtrak in case they didn't make it to Kingman, but they made it. Instead we were told to get in the van and "shadow" a train from Griffith to Needles to make sure that they made it in. They did make it. Then we were told to dog catch the Q CHISTO at Berry. We got in the van and went back to Berry. We releived the inbound crew. We pulled into Needles around 8:30 am. The dispatcher gave us another job. We were to go to the siding at Valentine and get on a train. Another train was supposed to come by and put a motor on our train. (Something was wrong with the leader, it was crappy Norfolk Souhern motor, but the one they were droppng off was also a Norfolk Southern motor). Then we were to take the train to Needles. I never did learn what the symbol of our train was. It was a "rolling bomb," made up mostly of tanker cars. It had 3 motors on the head end and 3 in the middle. My engineer got on the DPs in the middle and signed the cards. He noticed that the train was in emergency. We got on the head end. The rapid responder showed up and we discussed what we had to do. The oher trian came by. They had 4 motors on the head end and they were to give us their 4th motor. They uncoupled from their train, went past the switch, I helpd the conductor get ready for the separation.My engineer got on the motor and we took it back into the siding and hooked it onto our train. I conenected the hoses and the MU cable. That done, we did the locomotive air brake test. The van ran me to the head of the train. Since we had a new leader, we had to "arm" the ETD and do a two way. I gave my engineer the # of the ETD and kept pressng the button but it would not arm. The rapid responder came back nd gave me a new ETD. There was a train on the Main and he had to pass it between cars. I mounted the new ETD and it wouldn't arm. We were running out of time. The dispatcher told us to call it a day. The van ran me back to the head of the train. My engineer left a note as to what the next crew would have to do. There were 40 handbrakes tied on that train, the 3 motors and 37 cars). The next crew would have to do the Class III and a couple of other tests. The only question was if our driver had enough time to take us back to Needles. She tried calling her dispatcher and couldnot get through. However, I called and I got through. The disptacher authorized her to take us to Needles. It was 12 hour plus day and I was exhausted. I went home, enoyed a good meal, and the company of my two children, and watched TV. Today I am on my rest cycle.