Which types of aircraft do not have ejection seats or canopy-removal systems but may have jet-assisted take-off units?

Cargo aircraft typically do not have ejection seats or canopy-removal systems as they are not designed for aerial combat or high-speed maneuvers that would necessitate such safety features. Instead, cargo planes are primarily built for transporting goods and people, which does not include the need for pilots to eject in emergency situations.

However, some cargo aircraft can be equipped with jet-assisted take-off (JATO) units. These JATO units provide an additional thrust to help the aircraft get off the ground, especially in situations where runway length or weight might restrict normal takeoff performance. This combination of characteristics makes cargo aircraft distinct compared to other types like fighters, bombers, or tankers, which are often designed with ejection systems or canopies as necessary safety features due to their combat-oriented roles.