Now if you're talking about crossing the pond, well, you have to choose the GE TF-39 (W/HT90 turbines) powered FRED. Large and in charge. First generation of the high bypass turbofans. A classic. Just like the Commodore 64. They give you FOUR (4) of the old motors, just in case you want to turn one or two of them off. And if you're gonna do that, well why go to Ramstein, just divert into Shannon.
As to the crossing itself, make sure to stop by Franco's by Dover's North Gate, to get the small ham, spinach and cheese calzone. More than enough for the crossing. After you pass 10,000 feet, put the Jump Seater in the front, heat up the pie in the oven, gorge, then take a nice nap in the bunk room. You'll be refreshed for the arrival and landing, and have the energy to race gokarts at the indoor track not far from the base.
Without delving into funding battles, the C-5M SuperGalaxy will make the crossing even better. Maybe 25% more fuel efficient with the CFM-6's, and more reliability and power. Fuel burn alone make return on investment a short order. Less fuel loaded in the tanks means more cargo on the floor. Further leverages Global Reach capabilities, without needing the tanker formation Barney requires.
And that's all I'm going to say about that... for now.