namely, the power to rescue a person even against his will in life-threatening circumstances. We do not, however, accept that the phrase “any and all” gives the Coast Guard carte blanche authority to engage in forcible evacuations in less than life-threatening emergencies. A forcible evacuation from a private vessel constitutes a seizure of the person. Under the circumstances, the body of case law developed under the “emergency aid” exception to the Fourth Amendment’s warrant requirement both lends support for evacuation authority and cabins it. That exception requires an objectively reasonable belief by safety officers that a true emergency exists and there is an immediate need for assistance or aid. See, e.g., McCabe v. Life-Line Ambulance Serv., Inc. 77 F.3d- 540, 545 (1st Cir.1996) (<HOLDING>); United States v. Richardson, 208 F.3d 626,
recognizing first two exceptions recognizing that exigent circumstances exceptions by their nature turn upon the objective reasonableness of ad hoc factspecific assessments recognizing a presumption of reasonableness recognizing exceptions to immunity recognizing that exceptions to section 3109 may apply in exigent circumstances