I'm currently trying to help my parents re-invest the funds in their IRAs. They are 85 and 90. My father (90) has always been into precious metals, and had about half of their retirement funds in a Fidelity precious metals fund (FSAGX) (!). This never seemed particularly wise to me, as it represented about half of their liquid assets, but he was stubborn as hell. Now that he's developed Alzheimer's, my Mom and I are free to reallocate.

So, there's really only about $200k in their IRAs. Other than that, they have a little bit of non-qualified money ($26k) in a VG fund, which I also need to look at. Most of their living expenses are covered by SS and a decent pension, and they own their home ($500k) outright. They do, of course, take their RMD every year from the IRAs, but I suspect my mom may need to dip into it more soon, as she'll lose some of my dad's pension, should he die first. Bottom line, they need this money to be available to them in the next 5-10 years, for sure.
Both IRAs are currently at Fidelity, which I thought I might switch to Vanguard, but expense ratios seem to be somewhat comparable (is this correct?), so I'm not sure that's worth doing.
Where would you put this money? Assuming I keep them at Fidelity, are there any Fidelity funds or types of funds you would recommend for their situation? Maybe just a TIPS? Bonds? I am a bit younger, so I'm not as familiar with the more conservative funds.
Thanks in advance for any advice you have!