such as a ship o! an aircraft, or to evade another type of d.efence. 10?. In adclition to MaRv " other penetration aids are possible. fhey inclu<Ie considerably iaproved hard.ening of the nuclear weapon or the RV itself s,rtd the potential deploynent of alecoys rhich rosembl.e the real BVs in radar or infrared properties. One example Of protecting re-entry vehicles in space against rad.ar otslrvation is to encl-ose each in an inflateal aluninized balLoon, so that sinilar balloons ( enpty) could sexve as decoys" ].O8. The primary development in the delivery of nuclear weapons by aircraft concerns ihe pfanned lonpi-range o air-la'nched cruise missiles (n-f,CU). Thus, the United States tras a progranme to i.ntroduce ALCMS of 2,1+00 kn" rsnge on its B-52 bombers in 1982, and to d.eploy sone 3"oOO with a'warhead yieltl in the 200-kt " range" Secause the A!CX{ is so much slaa1ler than the aircraft itself, it woultl be nrore d.ifficult to aletect by radar " infrared racliation or other means; its smal-ler size vou]_d also ma.ke it less yulnerable to defensive measures such as guns, anti.-aircrafb nissiles and tbe 1ike. rts ability to fLy at very Low aititudes {oufd add. to the difficulties of atetecting and engaging it. Finatly' the fact that d.efensive systens would. have to d.estfoy 20 ALCMS father thsJt one penetrating bomber, would. require vastl-y nore surface-to-air missiles and lut a greater strain on the air defences than would an irnproved bomber aircraft ' 109, The SAL,T II treaty beti{een the United. States and the USSB (cf. also chapter VII) woul"d set nearly equal nunerical l-inits on offensive systens that eitler country rnoy deploy. Tbe treaty woul-d also have some impact on the furthe" technological d.evelopment of weapons ' as it would l-imit re-entry vehicles on ICBMs, SLBMs and ASBtr{s to that number for vtrich the nissile had been tested. This
**Analysis**
The text appears to be discussing the development and deployment of nuclear weapons, including the use of penetration aids, cruise missiles, and re-entry vehicles. It also mentions the SAL, II treaty and its impact on the technological development of weapons. The text focuses on military technology and strategic defense, suggesting that it may be related to the development of weapons systems.

**Category**
Science and technology, Defense