Complete the following sentence: Based at New York City and then at Norfolk, Virginia, through the 1920s and into the 1930s, "Sandpiper" operated with the fleet, off the mid-Atlantic and New England coasts during the summer and fall and in the Caribbean and Gulf of Mexico during the winter. every spring, she returned north.<unk>every spring, she returned north. <unk> <unk> <unk> <unk> <unk>
Panama Canal Zone.