Hawk T1 , ie red arrows are fitted with Martin Baker ejection sets. They are zero zero seats. which basically means you can used them at stationary on the ground. the seat being deployed automaticaly detonates the canapy, shaped charge.
to stop them going off there is two safety pins, one on the top, and one on the seat pan, When the canopy is closed the ground crew person ChECKS to see if pins are in storage positions. if pilot forgets then it a crate of beer to ground crew
As the hawk is a rwo seat trainer, there is a master over ride in the rear cockpit (where the instructor sits) the pins have to be removed to allow this to happen
It has been reported (source online - not mentioned here)the hawk fleet was recently grounded due to faults with the ejection seats.
RIP to pilot
" Per Ardua ad Astra"