"Doctor Hale was implanted by the parasitoid Xenomorph form a day ago following a containment breach."
―Doctor Steven Hale (from Aliens: Colonial Marines)
Doctor David "Dave" Hale was an incubation specialist at the Origin Facility on LV-426. David's death was mentioned by his own brother, Steven Hale, who was trying to extract an embryo out of his brother's chest after a Facehugger breached out of a containment cell and impregnated David Hale with a Chestburster. Unfortunately, his brother's attempt to save his life was futile as the removal of the Chestburster proved fatal for David.