It is fascinating to learn about the backgrounds of the members of my congregation. They are smart people who have served the Lord in many ways. For example, I have a couple who were in the employment of NASA during the years of its heights in mission with the manned space flights and the shuttle operations.
They stay in contact with their fellow retired co-workers and one of them sent the following PowerPoint presentation as a remind of what they were working on and working for. You need PowerPoint or some program that lets you view slideshows. Also, you will need to move through the slides using your left and/or right keys. I pray you enjoy it!