Cookies from FBI on my computer?

I'm doing my blogroll and browsing bookface and as usual after I log out of bookface I go in to delete the cookie they put on my computer as there are reports it can still track where you go after logging out.

And what do I see in my cookies?

A cookie from the FBI.  I didn't go to any site that is government affiliated.  So why do I have a cookie from the FBI on my computer?

ETA: I ran a trace on my system to see how I get to bookface and here are the results.

Microsoft Windows [Version 6.0.6002]
Copyright (c) 2006 Microsoft Corporation.  All rights reserved.

tracert facebook.com

Tracing route to facebook.com [173.252.110.27]
over a maximum of 30 hops:

  1    58 ms     2 ms     2 ms  *********[192.168.1.1]
  2     2 ms     2 ms     2 ms  192.168.0.1
  3    14 ms    13 ms    13 ms  adsl-75-9-223-254.dsl.crchtx.sbcglobal.net [**********]
  4    14 ms    13 ms    13 ms  dist1-vlan52.crchtx.sbcglobal.net [65.71.129.17]

  5    15 ms    13 ms    14 ms  12.83.54.41
  6    58 ms    57 ms    58 ms  ggr3.cgcil.ip.att.net [12.122.132.9]
  7    58 ms     *       58 ms  12.250.28.10
  8    60 ms    60 ms    61 ms  ae1.bb02.ord1.tfbnw.net [31.13.29.2]
  9    77 ms    77 ms    77 ms  ae12.bb02.atl1.tfbnw.net [31.13.27.150]
 10    86 ms    85 ms    84 ms  ae11.bb03.frc1.tfbnw.net [31.13.27.120]
 11    98 ms    82 ms    81 ms  ae39.dr01.frc1.tfbnw.net [31.13.27.55]
 12     *        *        *     Request timed out.
 13     *        *        *     Request timed out.
 14    83 ms    82 ms    83 ms  edge-star-shv-13-frc1.facebook.com [173.252.110.
27]

Trace complete.

Hops 8 through 11 are all in Ireland.  Why does my traffic have to go to Ireland when I'm in Texas and bookface's server is in Princeton, New Jersey?