I remember seeing these arms on a visit aboard the patrol combatant USS Tornado at Little Creek, Virginia, about 10 years ago, and being struck by the appropriateness of the tornado-shaped dragon.
http://www.tioh.hqda.pentagon.mil/Navy_Graphics/USSTornadoCOA.jpg
From the Institute of Heraldry website:
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Quote:
SHIELD: Or, billetty Gules, on a pile Sable a dragon urinant of the first detailed Vert breathing flames to base Proper.
<b>CREST: From a wreath Or and Gules a demi-mace Argent radiating six lightning bolts Celeste and charged with two sighting lines crosswise of the second encircled by an annulet Sable.
SUPPORTERS: United States Navy sword Proper and a trident saltirewise Or.
MOTTO: A bipartite scroll Azure doubled and inscribed “FOCUSED PRECISION” Or.
SYMBOLISM
SHIELD: Dark blue and gold are the colors traditionally used by the Navy. The black pile suggests the funnel of a tornado and bears a dragon, an awesome mythological beast breathing fire and destruction, symbolizing the ferocity and violence of a tornado. The red billets highlight the confusion and havoc left by the storm.
CREST: The mace, a symbol of authority, underscores USS Tornado’s law enforcement mission. The lightning bolts represent the ship’s modern electronic capabilities; light blue alludes to coastal waters, PC 14’s area of operations.
SUPPORTERS: The trident, adapted from the Naval Special Warfare insignia, and crossed with a Navy sword, refers to the ship’s mission of providing support for Special Warfare forces.
I like those ones.
I second that, the placing of the Dragon in a Tornado shape is great.