awk '# awkro - expand acronyms 
# load acronyms file into array "acro"
FILENAME == "acronyms" {
	split($0, entry, "\t")
	acro[entry[1]] = entry[2]
	next
} 
# process any input line containing caps 
/[A-Z][A-Z]+/ {
	# see if any field is an acronym
	for (i = 1; i <= NF; i++)
		if ( $i in acro ) {
			# if it matches, add description 
			$i = acro[$i] " (" $i ")"
		}
}
{
	# print all lines
	print $0
}' acronyms  $*