2007 Ford F550 6.0 Dropped a bolt behind turbo!

Installing the turbo (again). Attached the two Marman clamps and bolted it all down.
Let's be clear, I am not a diesel mechanic. I just have a wide general mechanical knowledge. I know internal combustion engine theory and operation and how to turn a wrench. Biggest of all, I know where to go to get the information I need. I like to think I use good deductive reasoning while I go about making the same mistake five times.
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