Based on Carin-Anne Strohmaier, 1st assistant movie editor, the shot was established as a result of three different plates and digitally manipulated in CGI to produce the impact: 1 plate was from your cameraman major Ellie, the second of Ellie opening The cupboard door (which was a blue screen instead https://docs.google.com/presentation/d/1afYV19Bj7XExCUF-Qu5WzZkta8M7Nbz3ItfbIkbcdWo/edit?usp=sharing