It wasn’t Obama. “The future of Loran-C began in the 1990s; several turn-off dates were announced, then cancelled. In 2010 the Canadian systems were shut down, along with Loran-C/CHAYKA stations shared with Russia. One of the reasons for Loran-C’s opening to the public was the move from Loran to new forms of navigation, including inertial navigation systems, Transit and OMEGA, meant that the security of Loran was no longer as stringent as it was as a primary form of navigation. As these newer systems gave way to GPS through the 1980s and 90s, this process repeated itself, but this time the military was able to separate GPS’s signals in such a way that it could provide both secure military and insecure civilian signals at the same time. GPS was more difficult to receive and decode, but by the 1990s the required electronics were already as small and inexpensive as Loran-C, leading to rapid adoption that has become largely universal.” In short, we all abandoned it to GPS. Loran-C was good, but face it, some people still like Windows 3.1!