Been thinking on this approach quite a bit. From a SAR perspective anyway (and at the risk of sounding cryptic whilst trying to remain respectful) perhaps we should try approaching several obstacles thus far encountered in the attempted location and recovery of Mr. Harrod, the old fashioned way.
Here goes a scenario:
Let's say (hypothetically) the 'Bank of Bob' has several branches. Some branches are open Monday to Friday, 9-5. Some have Saturday hours. Some are open late on Wednesday, some have full online capabilities, others are limited, and locations vary. You get the jist.
For the sake of argument, let's say that there are 9 branches in the Bank of Bob. Two crimes are assumed to have been committed at one initial location (the main branch), and related crimes to those initial crimes may have been committed at other locations. For example, suppressed evidence of one crime committed at the main branch might be located at a third, fourth and/or fifth branch location, and evidence related to the second crime might be located at branches 6-9. Or any permutation thereof.
Rather than blanket or umbrella, very specific SW's might be necessary for property relating to aspects of the assumed crime(s); for example, paper documents from branch three, electronic documents from branch 7, tangible objects from the main branch as well as branches two and four, person(s) from branch nine, etc.
To obtain aformentioned SW's, a magistrate judge (or multiples, depending on district of location of branches) would need to be approached by federal LE or AG's office with either affadivit, sworn testimony, recorded testimony, or telephonic or other reliable electronic means- with evidence of a crime, contraband or fruits of a crime, property intended for use or used in committing a crime, or for a person who is being unlawfully restrained.....yes? (Random, but that last really bugs me as it pertains to a declaration of death... which I find infuriating and very telling....but that's neither here nor there I suppose.... just a personal gripe...)
Anyway- physical searches of branches would be necessary in order to obtain aforementioned material as denoted on these hypothetical (and thus highly desired and informative) SW's. For example, a SW might be issued for safety deposit box # 2194 in the central vault at the main branch. In order to access that specific box, the grounds, the branch and the vault would have to be entered and exited- thus allowing visual, auditory, olfactory observation to those 'un'authorized areas as stated on the hypothetical SW.
If ya'll have followed this bit of a ramble (thank you for your patience lol) then, well. Heck. We'd have quite a few more brushstrokes painted on that big picture, wouldn't we. And maybe we might find Mr. Harrod....or evidence of where he might have been beyond his last seen (the main branch location, kwim?)
(Are ya'll with me, here? Or have I gone 'round the bend?)