When an engine is ignited, it produces thrust and boosts the rocket into the sky. After the propellant is used up, delay is activated, producing tracking smoke and allowing the rocket a brief coast.
infirmary (plural infirmaries) 1  A place where sick or injured people are cared for, especially a small hospital; sickhouse. 2  A clinic or dispensary within another institution.
For the purposes of this text, an ambulance means a vehicle or other mobile mechanism, of any. kind, which is used to transport the sick or injured from the site of occurrence or invalidity, to a. medical or other treatment location or facility.