During a maneuver, transposed digits lead to a fatal bombing of a unit's own men. This causes several seriously wounded and eventually one dead soldier. Lt. Rabb and Lt. Austin are assigned to investigate this case because the responsible man is none other than Jay Williams, the son of Gen. Williams. But it seems the case is clear since Jay confesses that this mistake was his fault. Locations: MCB Twenty-Nine Palms

Harm and Meg are investigating the death of a Navy officer at the Arlington Cemetary, where during the months before, other Navy officers have been murdered, too. This murder happened after a reception at the French embassy and the trail leads to the Thai ambassador and his wife. Harm is attracted to her as she reminds him of a girlfriend back in Vietnam who was killed. Also, Colonel Patano (the ambassador's guard), is one of the suspects. Locations: Washington D.C.; McLean, Va.; Bethesda, Md.

While searching for a girl who disappeared near an abandoned Naval Air Station, Harm and Meg watch the same mysterious lights and hear the same painful sound which also took place during Kathy's disappearance. Though it looks like alien movement, neither Austin nor Rabb believe in UFOs. While looking for the young girl on the base, they nearly get caught but thanks to Kathy they manage to escape, but are trapped on the base. Locations: Del Rio, Texas

On a sailing trip near Hong Kong, Harm is captured by the Chinese military. They want him to reveal the United States' position in case the Chinese should take two islands (which are claimed by Taiwan) by force. To get this information, the Chinese employ various mind games including placing Harm's father in a adjacent cell. Cdr. Krennick and Lt. Austin are offered a deal which includes Harm's freedom and asylum for a Chinese military person. Locations: Hong Kong; Nantou, China