The initial idioms of the letter D

Defense Department	defense force
Defense Intelligence Agency	defense laboratory
defense lawyer	defense lawyers
Defense Logistics Agency	defense mechanism
defense policy	defense program
defense reaction	Defense Reutilization and Marketing Service
Defense Secretary	defense system
defense team	Defense Technical Information Center
defenseless	defenselessly
defenselessness	defensibility
defensible	defensive
defensive attitude	defensive measure
defensive structure	defensively
defensiveness	defer
defer to	deference