My bud Larry is on the ramp warming up Panchito and I’m laying underneath it shooting with the 18AF! Yeah, laying underneath it and having a blast! He ran up the B-25 until you could feel the vibration through the ground in your chest, it was great! I shot the D4 all day on everything from 200-400VR2 to 18mm capturing 2989 stills & 32GB of vid. The camera AF for all those images and there was a fair amount of chimping as this was my first aviation shoot with the D4. There was 68% of my battery left after all of this. Not sure about other reports, but I’m not experiencing any battery issues with the D4. mtc….