Sentence:  As time has passed and science has progressed , the speed of military vehicles has increased , the range of <WSD>missiles</WSD> has been extended , the use of target-hunting noses on the projectiles has been adopted , and the range and breadth of message sending has increased . 
Meaning of the word marked with <WSD> tags:  a rocket carrying a warhead of conventional or nuclear explosives; may be ballistic or directed by remote control