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| | Chemical Unit Distinctive Unit Insignia (DUI/DI) (Site not responding. Last check: 2007-10-12) |
 | | J3, Headquarters, MACV, Air Operations Division (F) - Similar to M2B, enameled, disc and inscription on green border are maroon, benzene rign is light blue. |
 | | J3, Headquarters, MACV (C) - Similar to M3, disc is brighter red, painted on a regular thick blank, not a beer can; Benzene ring is larger and light violet instead of dark blue. |
 | | J3, Headquarters, MACV (C) - Similar to M3A, enameled, disc and inscription are maroon, benzene ring is light blue. |
| www.nbc-links.com /dui-other.html (826 words) |
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