Heyoo, if yall could help that'd be awesome :)
Is the following a sentence or fragment?
Sitting right there at the table.

That’s a fragment. A complete sentence could be “She was sitting right there at the table.”

As the boys sleep, military airplanes battle fiercely above the island. none of the boys sees the explosions and flashes in the clouds because the twins sam and eric, who were supposed to watch the signal fire, have fallen asleep. during the battle, a parachutist drifts down from the sky onto the island, dead.