Today is the 40th anniversary of the 1st shuttle launch. This week NASA commemorated the (1ST) countdown (&10) astronauts and technicians who died on board or due to an onboard accident (ON THE FORTY)- year anniversary of her first mission.

https://www.nasa.gov/feature/40-years-ago-three-weeks-before-launch-the-sts-1-crew-completes-a-countdown-demonstration

https://www.nasa.gov/feature/40-years-ago-the-countdown-begins-for-sts-1-first-launch-attempt-scrubbed

1st & 10 on the 40

Q post 3313 on 18APR2018

When does the clock run out?