Artemis II launch is approaching T-20m until launch!

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RF folks: am I right in thinking that the three big masts surrounding the launch pad are supporting big helical antennas on the top? big white corkscrew looking things pointing directly up.
@gsuberland not sure but it's common to put that kind of fluting(?) on stacks to increase the amount of wind loading a cylinder can take
Helical strake - Wikipedia