Thank a lot to David and Steve!

:<xsl:variable name="x" select="//@secur.classif"/>
:<xsl:value-of select="document('')/*/x:classif/@*
:                          [name(.)=$x or name()='X'][1]"/>
:and at the top of your sheet
:<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
:                version="1.0"
:                xmlns:x="file:/dev/null"
:                >
:<x:classif P="PRIORITY"/>
:<x:classif F="FAST"/>
:<x:classif P="ROUTINE"/>
:<x:classif X="SLOW"/>

This helped minimize my code, but I could not figure out
how to a conditional if test nested within an otherwise
like the example below with the variable...
<xsl:choose>
<xsl:when></xsl:when>
<xsl:otherwise>
<xsl:text>U N C L A S S I F I E D</xsl:text>
	<xsl:if test="//@secur.dissem='FOUO'">
 	<xsl:text>//FOR OFFICIAL USE ONLY</xsl:text>
	</xsl:if>
</xsl:otherwise>
</xsl:choose> 


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