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Because we have not yet been able to definitively assess what these recent objects are, we have acted out of an abundance of caution to protect our security and interests, the spy balloon from (China) was of course different in that we knew precisely what (it) was. These most recent objects do not pose a kinetic military threat, but their path in proximity to sensitive (defense) sites and the altitude that they were flying could be a hazard to civilian aviation and thus raised concerns.