Reunion after 14 years of David James Elliott (Harmon Rabb Jr.) and Catherine Bell (Sarah MacKenzie) from JAG (1995).
The JAG theme song plays when Sarah is first seen, just as it played in the previous episode when Harm was first seen.
A "false flag" attack is one by a force upon a friendly force under the flag (or uniform) of an enemy force. An example was Germans dressed as Polish troops in 1939 that attacked other German troops to justify and gain support for the German invasion of Poland.