in the line of duty

:  a length of cord or cord-like material: such as

:  a comparatively strong slender cord

:  clothesline

:  to mark or cover with a line or lines

:  to depict with lines :  draw

:  to place or form a line along

:  to cover the inner surface of

:  to put something in the inside of :  fill

:  to serve as the lining of

:  conduct due to parents and superiors :  respect

:  obligatory tasks, conduct, service, or functions that arise from one's position (as in life or in a group)

:  assigned service or business

:  done as a duty

:  being on duty :  assigned to specified tasks or functions