in-flight they show a thin wing bar, with stripes on the primaries, and a prominent white base of the tail, while the tip is dark-grey. consuming caffeine will make the performance somewhat better when you only sleep for 5 hours, but only for the first 2 days. in the end, ask the question why and listen to the explanation. just click on the pic above to go to paper pumpkin. apply the process in a given setting. i will chime in and say that this is quite good and very easy. 