The NDB is the best instrument approach around lol, I bet the Army still has a few lol.
Yeap, you should always know basic instrument techniques. As much as I hated doing a F2F, I always gave one on check rides (before it was removed from the 11mDS vol 2 ). One day (crazy world war or alien invasion), those moving maps and GPS waypoints may not be there or be that accurate. That trusty TACAN will always be there. Lol