This came from BAE brochure of ASQ-239
https://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0ahUKEwix2P-C4uPPAhWFWhoKHbAwDZwQFgghMAE&url=http%3A%2F%2Fwww.baesystems.com%2Fen-us%2Fdownload-en-us%2F20160718215911%2F1434583878736.pdf&usg=AFQjCNG0lru4BJHco6Zoa4cP6SzJ0n_i1A&sig2=femGPVvkL5Kc1NPVqzvpjQ&bvm=bv.135974163,d.d2s
Seem like that not only F-35 can carry towed decoy (aka ALE-70 ) but ASQ-239 also has a separate jamming capabilities separated from APG-81
It looks like the USN did put a contract out in April 2014 that has caused some confusion.
http://archive.defense.gov/Contracts/Contract.aspx?ContractID=5255
These two Budget docs provide a lot of clues... still digging
http://www.dtic.mil/procurement/Y2017/Navy/U_P40_0182_BSA-1_BA-1_APP-1508N_PB_2017.pdf
http://www.dtic.mil/procurement/Y2017/AirForce/U_P40_76_BSA-4_BA-7_APP-3010F_PB_2017.pdf
The program is buying 318 of them in FY2017 and has been buying them for yeays (search the budget docs for "ALE-70" and you will see them going back to 2014.
ALE-70 = Towed Decoy ($50k each)
MJU-68/69 = Flares http://www.chemring.co.uk/~/media/Files/C/Chemring-V2/PDFs/introduction-to-chemring-for-investors-oct2014.pdf
CCU-168 = Impulse cartridge for the flares https://govtribe.com/project/13-pn-8385852-2-ccu-168b-impulse-cartridge/activity
MJU-61/64 = also flares (4 differenc kinds?)
Absence of chaff info is odd....
This tidbit from the FY2017 budget (looks like the ALE-70 is in Block 2B/3i already: