Windows 8.1 missing WinRE.wim in WinPE

I'm trying to pull a Windows 8.1.wim file down to a laptop (the same laptop that was the source of the .wim), and am following these directions from MS, and everything works until:

# W: is what will be C: when booting Windows:  W:\Windows\System32\Recovery\winre.wim T:\Recovery\WindowsRE\winre.wim

• As far as I can tell, there is no W:\windows\system32\recovery\winre.wim, using dir to search W:, but there is no winre.wim

Where is the winre.wim?