No image-recording devices allow...

...that is , when you're in a military facility.

So although i can't show y'all what goes on exactly...i've found the video below instead. 

Everything you're about to see, i've done routinely between  June 1995- September 2001, and much much more:

securing stress panels, 

refuelling, 

droptank fitment,

visual inpsections through quick-release panels,

coupling up the air supply unit for engine startup or ground runs,

connecting external power for electrical systems check,

checking flight instruments inside the cockpit,

When the pilot came to take his aircraft, i'd strap him in and get the jet started up, making sure that;

the landing gear inboard doors close properly during engine wind up,

the auxillary intake doors open which indicates generators are online,

the jet doesn't taxi out dragging the air hose with it :P,

all the external lightings are working ( that's the beacon light on the vertical stabilizer)

Video: http://www.youtube.com/watch?v=LB4URDIitfY All this while communciating with the pilot thru silly looking hand signals.

And just before it taxi out of the shelter, we do a brakes test....NOT! It's actually to ensure that the stability augmentation system is working properly. You'd have to know where to look....but i'm not telling :P

After completing it's sortie, the jet makes it's landing and deploys a dragchute so as not to overheat the brakes.

Once the engines have shut down, the engine oil levels must be checked within 15min and a new dragchute fitted. You'd notice the packer's 'pecker' getting a warm reception from the twin exhausts. After which, he subjects his face to same ordeal.

Hope this gives you abit of insight. If you have any questions...do feel free to contact the airforce's recruitment unit :P