In OA, find CE if BA= 4​

Sequoia national park  /  inyo national forest, california, u.s. mount whitney is the tallest mountain in california, as well as the highest summit in the contiguous united states and thesierra nevada—with an elevation of 14,505 feet (4,421 m).

Exploration mission 2;

It is nonrenuable which means that once you have used it, it's gone forever.