Leading up to the skydiving scene where Cooper has does his first tandem-jump with Star, the camera films the red & white plane they are flying in. The aircraft is a DHC-6-100 Twin Otter, and at the time of shooting the movie, it was owned and operated by Skydive Sussex, not far from New York.
To improve his skydiving skills, Cooper goes to Delmira, the leader of an Army team. The team; The Golden Knights, who in real life a group of elite skydivers from the US-Army, have since their creation in 1959, won more than 2,148 gold, 1,117 silver & 693 bronze medals, in national and international competitions. Member of the Golden Knights have also participated in breaking more than 348 world records.
As heard in the bar, the phrase "Blue Skies, Black Death" has for many years been a reminder to us, that there is a price to pay for the freedom experienced in skydiving, and have widely been used when a skydiver dies.