The Eustachian tube originates in the rear of the nose adjacent to the soft palate, runs a slightly uphill course, and ends in the middle ear space. The middle ear space is the hollowed out portion of the skull bone that contains the hearing apparatus and is covered on one side by the eardrum.
brinkmanship, brinksmanship. the technique or practice in foreign policy of manipulating a dangerous situation to the limits of tolerance or safety in order to secure advantage, especially by creating diplomatic crises.
A great danger of complacency is laxity. Instead of maintaining the levels of readiness and discipline you had during adversity, you allow things to decline over time. Logically, there is no need for such effort since this is a time of ease. But ease and success do not last forever.