Boeing 767-300 Cargo - Engine Run at Blast Fence

Sorry if it's with a smartphone camera. I left my GoPro at home.

This is the engine run that was performed by a qualified professional to see where to apply the correct amount of counterweight to the engine spinner while using applicable charts to calculate.

This is a procedure that has to be carefully performed which is why there are trained professionals behind the controls and I'm over here holding the camera. Once the engine run is complete and the engine is shut down, I receive the data from the operators and proceed with making the appropriate changes to the engine being affected. Once I'm done making the changes, I report to the operator via the intercom and then they repeat the engine run once more to confirm the changes were accurate.

PS: If the red anti-collision beacon lights look intermittent it's because the frame rate of the camera is not consistent with the timing of the lights.