dia

A diagram editor, based on the GTK+ toolkit.

Extremely neat if you need to splat down symbols and draw lines between them, or do something similiar - it's not intended for "art" drawing. It uses XML format work files, and exports Encapsulated PostScript and other useful formats like PNG.

It also has extendable symbol libraries for various purposes, including symbols for circuit diagrams, UML, and such.

Acronym: Defense Intelligence Agency. Commanded by the Director of Central Intelligence (DCI), who is usually the same person as the Director of the CIA in a dual hat job. DIA is in the chain of command directly above the Air Intelligence Agency, or AIA, as well as the Office of Naval Intelligence (ONI), and so on throughout DoD. The DCI reports directly to the President.