[JohnCClarke]

A long and venerable litany of spaceflight disasters would beg to differ:

- Apollo "Little Joe" A-003 (May 19, 1965): A roll gyro - Proton-M Launch Failure (July 2, 2013): Yaw sensors - Genesis Space Probe (2001): Accelerometer

Getting things the right way round is very important.

[zem]

agreed, but "these letters have been taken down and put back up several times and along the way the H and S weren't always put the right way up" is a complete story. just let the place know and they can fix it. the details of when each letter was messed up by whatever random person are of little interest.