The Master Alarm indicator of the Apollo Command Module represents a pivotal component of the spacecraft's instrumentation and warning system. This critical feature is designed to promptly alert astronauts to any impending issues or emergencies during their mission, ensuring their safety and enabling timely response. | Concord Aerospace | Facebook

78K views · 1.7K reactions | LIVE NOW: View our #Apollo50 Anniversary video about Apollo 7, the first program mission to carry a crew into space. Walter Cunningham called it "the most ambitious, and most successful first test flight of any new flying machine, ever." Follow & watch NASA's Look at 50 Years of Apollo: | NASA - National Aeronautics and Space Administration | Facebook