Help with shoulder sleeve patch identification

[bcpitch5]

Recently acquired this patch. It appears to be WWII era and what I'm assuming is a military patch. Any ideas?

[FALLSCHIRMJAGER]

Hi , as i'm sure you have worked out for yourself , the symbol underneath the plume is for a nuclear reaction. So I guess it is an American unit involved in nuclear testing/ Leon.

[FALLSCHIRMJAGER]

Just found it on "wiki" ARMED FORCES SPECIAL WEAPONS PROJECT. Leon.

[bigmacglenn]

I found it online listed as "Older style Defense Nuclear Agency Insignia worn until 1970..."
cheers, Glenn

[CBH]

It is American , "Defense Atomic Support Agency" my book didn't have any other information about the unit .
Cheers Chris

[bcpitch5]

Thanks for all the help!