The CIA has papers about it [1, 2]. Paper [2] even contains experiments that should be easy to replicate (and will obviously not work). It's probably complete BS.
There is a paper [3] that derives the Maxwell equations from quaternions and introduces a scalar quantity called "Temporal Field".
If you completely disregard gauge freedom like all those "theories" you can do all kinds of fun things. But those things don't describe what we see in nature.