SAM, サム
See 地対空ミサイル, Military term
SAM, surface-to-air missile
は
Particle, pronounced わ in modern Japanese
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
とても, 迚も, とっても
Adverb, とっても is more emphatic
1. very, awfully, exceedingly
before a negative form
2. (not) at all, by no means, simply (cannot)
この雨の中を外出することはとてもできないことです。