Jacananana - FMAEC
This mod adds Edward's coat from Fullmetal Alchemist to Fallout 3. It is just a piece of clothing and it only has the usual qualities of clothing, nothing special.
It can be found in a footlocker near the entrance to Big Town. (see screenshots).

Console Command to get "Edward's Coat": player.additem XX000EA7 Y
Where:
XX is the esp's load order; and
Y is the quantity of the item.
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Jacananana - FMAMC
This mod adds a military coat from Fullmetal Alchemist to Fallout 3. It has 3 gold stars on it's sleeve, which, in Fullmetal Alchemist seems to represent the rank of colonel. It is just a piece of clothing and it only has the usual qualities of clothing, nothing special.
It can be found in a footlocker near the entrance to Big Town (see screenshots).

Console Command to get "FMA Military Coat": player.additem XX000EA7 Y
Where:
XX is the esp's load order; and
Y is the quantity of the item.
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To Install:
Extract the files, then copy/paste the "data" folder into into the directory that your Fallout 3 exe is in. Say yes to merge the folders, and check the esp in either the Fallout launcher or FOMM when you start up fallout.
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The files uploaded *should* work, but my Fallout game is heavily modded. If it doesn't work, leave me angry comments and I'll get around to fixing any issues ASAP.
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If antone's interested in getting ignition gloves from FMA, here's another mod of mine:
http://fallout3.nexusmods.com/mods/17510