 The episode first aired on Fox on April 8 , 2001 , earning a Nielsen household rating of 7 @.@ 6 , meaning that it was seen by 7 @.@ 6 % of the nation 's estimated households . " Three Words " was viewed by 7 @.@ 77 million households and ranked as the 32nd most @-@ watched episode for the week ending April 8 . Fox promoted the episode with the tagline " Who will control the X @-@ Files ? " The episode was later included on The X @-@ Files Mythology , Volume 4 – Super Soldiers , a DVD collection that contains episodes involved with the alien super soldiers arc . 
