Aren't FED days fun?

Whipsaw city today, why it is usually best to sit on the sidelines during FED days unless you are the most nimble of traders. This drop at EOD has brought back the b-wave top potential, and a break of 1677 would confirm, targeting the blue box below. If support holds however, we can continue grinding higher in the ending diagonal scenario, but realize that there will be plenty more gyrations up and down before completion.

 Elliott Wave Chart