I le amataga o le seneturi lona 20, sa talitonu le toatele o pule o le vaomatua e tatau ona taofiofia afi i taimi uma. I le 1935, o le U.S. Forest Service's fire management policy stipulated that all wildfires were to be suppressed by 10 a.m. the morning after they were first spotted. Na faavaeina au tau afi i fanua lautele, ma e masani lava ona faafaigaluegaina e alii talavou i taimi o afi afi. I le 1940, o le au fuimu e taʻua o le smokejumpers o le a oso i fafo mai vaalele e tineia afi i nofoaga maotua. I le amataga o le Taua Lona Lua a le Lalolagi, e sili atu i le 8,000 afi vaavaai olo na fausia i le Iunaite Setete.
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