I have slowly been learning how to make better quality videos these past years, and have remade a video about Marvin Moles' helmet and wartime story that does him much better justice  

Yes, Grenada and Panama rated combat jump star on the wings and an arrow head devise.  Here are others.  

Was a ribbon bar with the narrow white stripe first ribbon issued with the first Navy Cross medals?   If so, was it 1/2" wide by 1 1/2" long? Pinback?   thank you Mike

Beautiful medal, real early quality production. I have one of these too, and as you say, it is heavy – gilded bronze I think. I particularly like the finish on these earlier medals, crisp and fine details on the designs.

Has there been any award or authorization of the Arrowhead device for any 'assault or landing' after Vietnam? The AB landing and beach landing in Grenada? Or any of the landings/AB drops in Panama?

I would put money on the possibility it is just that.  

Here's a couple of original OD ones.   A Tan-ish OD (Sold by Forum Member) https://www.ebay.com/itm/355729120400?chn=ps&mkevt=1&mkcid=28&srsltid=AfmBOooZCfotBGrECruMqT7Zo32kdOr3h1-WDN-eU_QrEBl6XGTGvqIB2l4   A Dark OD https://www.ebay.com/itm/115495388422  

Thanks, Nooby416.  I guess that does make sense, considering I'm in the Chicago-land area.   @Forum Manager , would you be able to move this over to the M1917 subforum?  Sorry about that, and let me know if there is a preferred way I to request a move/edit like this.  Thank you!

US troops in the back of a M3A1 Scout Car with an M2 .50 MG and two M1919 .30 MGs during training at Fort Huachuca, Arizona - 1943 Note the absence of ammunition belts During WW2, the 92nd and 93rd Infantry Divisions trained at Fort Huachuca. The Fort is still an active US Military Base despite a brief closure from 1947 to 1951. LIFE Magazine Archives - Charles Steinheimer Photographer WWP-PD  

That is not a medic symbol, it's the insignia of the 33rd Division, there is a castle below it so the helmet was used by an engineer. There is a 1 before the 9.   Underneath the felt pad is an asbestos pad.