Sentence:  The cost of developing a major weapon system is now so <WSD>enormous</WSD> that the greatest care must be exercised in selecting new systems for development , in determining the most satisfactory rate of development , and in deciding the proper time at which either to place a system into production or to abandon it . 
Meaning of the word marked with <WSD> tags:  extraordinarily large in size or extent or amount or power or degree; that a whole civilization should be dependent on technology"- Walter Lippman