I see a bunch of SOTAwatch alerts that indicate 146.52 MHz for 2m FM.
If we all end up on the calling frequency, it will be a mess. It's been done before.
Please use the designated Colorado 14er Event frequencies: 147.42, 147.45, 147.48 and 147.51 MHz

More info here: https://sites.google.com/site/ham14er/frequencies

Thanks!

Bob