A koan for a winter day.

A monk asked Tung-shan, "When cold and heat come, how can we avoid them?"
Tung-shan said, "Why not go where there is neither cold nor heat?"
The monk asked, "Where is there neither cold nor heat?"
Tung-shan said, "When cold, let the cold kill you; when hot, let the heat kill you".

Welcome to the Air Force.

In the honor of aa, who just joined the Air Force, here is a good example of how an Air Force emblem looks like. (This is the emblem of the computer unit where I and the missus both served and got acquainted).

In the middle you can see two prominent Air Force symbols, the blue Magen David (the hexagram) and a pair of wings. Very few Air Force emblems go without these two. In addition, you can see an element which signifies the unique character of the unit. In this case - a reel of magnetic tape, which was used in the computer industry mainly in the 70's and 80's. There you are - "an Air Force computer unit"!