IanR wrote:What we are seeking is an answer to the anomaly of why the light appeared yellow to the others but red to Halt.
It appeared yellow to Englund and Halt saw a yellow tinge in it, too, so the anomaly is not as big as it seems.
My take on the explanation for this (but you will disagree of course

)
There are several color descriptions of the first light(s) that Halt saw, both in his memo and on his tape:
A strange small red light.
Some kind of strange flashing red light.
A red sun-like light that pulsed.
Pulsating a glow with a red flash.
Yeah, it’s yellow.
I saw a yellow tinge in it, too.If you combine them you get:
'A red/yellow sun-like light, pulsating a glow with a red flash, that looks like a small flashing red light from a distance'.
Note that John describes the light he saw on the first night as “red & orange”, and Lori Buoen compared the light she saw on the second night to a mixture of three different colors of fire.
So they, too, were a bit confused about the exact color, or saw a mixture of colors.
Now for a bit of speculation: “Pulsating a glow” with a mixture of colors sounds like a plasma (the red flash could be caused by a separate light source).
Why assume a plasma is involved?
A plasma is a logical consequence of radiation and strong EM fields. Together these two physical phenomena are able to create and sustain a glowing plasma since they both can ionize air and can make it glow (basically, a plasma is an ionized gas).
It is a generally accepted fact among scientist who take the 5% of unexplained UFO cases very seriously that a UFO is often accompanied by a plasma sheath and that this plasma sheath is related to radiation and/or EM fields emitted by the UFO. See for instance
http://www.iprimus.ca/~mallet/paulrhill.shtml and
http://www.nicap.org/ufology/ufochap3.htmIn the RFI, both radiation and strong EM fields are reported near the UFO(s) observed. The residual radiation left in the ground may not be very strong, but residual radiation is only left by very ‘hard’ radiation, i.e., radiation with very high energy photons (such as gamma rays). The residual radiation does not tell anything about the amount of ‘soft’ radiation (such as X-rays) that the ground was exposed to, because 'soft' radiation does not leave any residual radiation (only heat). The reported health effects by the witnesses plus the reported ‘fogged’ photographs do indicate that the UFO was a considerable source of radiation.
So just like many other UFO cases, the RFI shows the ingredients for plasma forming and the observations made by the witnesses also indicate plasma forming was involved.
A glowing plasma can explain the fact that Halt and his men were not sure about the exact color (red or yellow), because the plasma contains a mixture of colors that is constantly changing and the color perception strongly depends on the plasma intensity (see vids and pictures in my posts above). On top of that, the plasma may become more intense and/or the color may change if the UFO ‘powers up’ to approach the men. This seems to be the case on Halt’s tape: The yellow color and brightening of the light is mentioned just before the men report that the object is coming their way.