The post from Christopher McQuarrie is specifically a recognition of Mission: Impossible 7‘s first assistant director Mary Boulding, who, after being a second and third assistant director on previous films, is celebrating her 100th day as the first AD for the very first time. She’s looking quite powerful with both McQuarrie and the cast of Mission: Impossible 7 standing behind her. Tom Cruise, Rebecca Ferguson, Simon Pegg, and more are there to congratulate her on the achievement.
Article source: https://www.cinemablend.com/news/2571845/tom-cruise-poses-mission-impossibles-cast-thanking-crew-long-shoot