Continuity mistake: The hull number shown for the USS Seahawk shown in this episode was "74" (in real life, the USS John C. Stennis), however, JAG has always used that hull number to refer to the show's 'other carrier', the USS Patrick Henry.
Continuity mistake: When Harm is ejected from the jeep after the mine explosion, his hat is on his head after he lands, but in the next scene, it shows his hat situated on the ground between the jeep & him.
Chosen answer: When landing on an aircraft carrier, a pilot "calls the ball" by confirming to the landing signal officer (LSO) that they have the carrier, and more specifically its landing guidance systems in sight. Carriers use a Fresnel lens system which is a light only visible at a certain angle, so if a pilot sees the "ball" they are at the correct altitude and glide slope for landing.
Sierra1 ★