def get_direction(source, destination):
    """Find the direction drone needs to move to get from src to dest."""
    lat_diff = abs(source[0] - destination[0])
    long_diff = abs(source[1] - destination[1])
    if lat_diff > long_diff:
        if source[0] > destination[0]:
            return "S"
        else:
            return "N"
    else:
        if source[1] > destination[1]:
            return "W"
        else:
            return "E"