Little information is available on the types of computers used by the CSE since then. However, Cray in the US has produced a number of improved supercomputers since then. These include the Cray SX-6, early 2000s, the Cray X1, 2003 (development funded in part by the NSA), Cray XD1, 2004, Cray XT3, Cray XT4, 2006, Cray XMt, 2006 and Cray CX1, 2008. It is possible that some of these models have been used by the CSE and are in use today.