Sentence:  In total , these increases in operating costs outweigh the savings that result from declining programs and from economy measures , such as reduced numbers of <WSD>units</WSD> and installations , smaller inventories of major equipment , and improvements in the supply and distribution systems of the Armed Forces . 
Meaning of the word marked with <WSD> tags:  an individual or group or structure or other entity regarded as a structural or functional constituent of a whole