As Jeremy is being airlifted in the stretcher, different shots show the medic with and without him as he is hoisted up.
When Jeremy is airlifted, the medic would never accompany the patient in the hoisting process. The stretcher would be sent up first, followed by the medic.
As the kids are escaping in the boat, during the close-up shots of Becky at the helm, it's very obvious the boat is not moving, as none of the background shoreline or water is moving.
Becky and Jeremy are supposed to be twins, however Becky is played by Australian actor Geraldine Viswanathan who is of Indian descent, and Jeremy played by Mexican-American actor Eduardo Franco.