There was a strange C-130 parked across the other side of runway 17R at Calgary International today which has got me intrigued ( I was watching it from the terminal where I was working). For starters, it was parked on Million Air's ramp (military aircraft usually go down to Apron 6 and sit on the Shell building ramp). Then I noticed it had no markings that you could see, and I watched it most of the day in different light as the sun went over us. I could see that it had what could be a serial number, this was because it was a darker grey to the quite light grey the aircraft was painted all over with. Except the nose radome, that was black. I could see on the side it was facing me that it had an oval or oblong bump, just behind and a little lower than the low cockpit window.
This one, sorry about the size, but my cell phone was zoomed in to the max and then to get it to show here I had to crop it