The 'Feast of Trumpets' is an annual Jewish religious observation for Rosh Hashana. The worldwide blowing of Trumpets, horns, etc... will be timed with that event El Shaddai's plan is to have worldwide christians participate in the event. See link for more education on it.
http://www.endtimepilgrim.org/trumpets.htm
What with this Judaising enthusiasm in American sects? Weird and a little sad, the way rootless people cling to another tradition.