The wing rotation crew. Seventy years after their original production, the He 219's wing looks like new. Note the position of the Balkenkreuz on the outer wing panels. Although Luftwaffe regulations routinely specified that this insignia be placed parallel to the leading edge of the wing, Heinkel located it in a slightly different position, parallel to the spar, which was exactly reproduced by NASM experts. Clearly visible are the blue horizontal and yellow vertical stand the wing is mounted to.