Seeman advised that American troops not enter an area hit by a bomb for "at least 48 hours"; the risk of nuclear fallout was not well understood, and such a short amount of time after detonation would have resulted in substantial radiation exposure for the American troops.
Seeman gjorde opmærksom på, at amerikanske tropper ikke gik ind i et område ramt af en bombe i "mindst 48 timer", da risikoen for radioaktivt nedfald ikke var klarlagt, og så kort tid efter detonation ville have medført en betydelig bestråling af de amerikanske tropper.