Convert Sierraskye into NATO, Binary, or Base64

Sierraskye's NATO is Sierra india echo romeo romeo alpha sierra kilo yankee echo, Binary is 01010011 01101001 01100101 01110010 01110010 01100001 01110011 01101011 01111001 01100101, and Base64 is U2llcnJhc2t5ZQ==