For all practical purposes, no. Unless the ET lifeform consented or abandoned the property.
I suppose [if you're brave] walk into the crashed vehicle render assistance, ascertain the reason for the crash and ask if there is a "retrieval protocol" set in place by the ET life forms. A form of beacon or bouy.
Though, I would also consider the fact that if this is the first time a craft has crashed, there is a reason why there are no other previous incidents recorded in history.
If it's happened before, it has been retrieved by someone. If that is the case, something happened to the witnesses in previous cases...
I am pretty sure if there is any credible evidence of ET wreckage which is valuable it will be recovered within a day of such a listing going up.
If you are stupid enough to put it on Ebay, then yes.
The assumption being that the internet and local media is the only way to track down wreckage and artifacts. The truth is [I think] something probably very different than the assumption from what I have heard and seen. Especially in light of developments of Remote Viewing projects and associated fields of non-physical information retrieval.
If you can use RV to remotely target events in current time, it is not that much of an investment for a group of people to develop information gathering techniques on time-displaced events set in the near future. Targeting the next future headline before it actually manifests and happens is probably the biggest secret UFOlogy has yet to be let into.
With that, even the so-called Men in Black suits and interested parties like ET can locate "near-term" events that cause large ripples in future consciousness and events.
Like a "time event" with ripples in the non-physical spectrum, various people with access to these techniques can observe it, locate the emergence and focal point of the event, and have someone on it before "the event" even begins to actually take place. Nipping the event in the bud before it ever takes hold.
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Is it really that hard to obtain information on a SCUD platform in Russia? [in "Present Time RV"]
If not, then is it truly hard to target the people with "evidence" that turns out to make headlines tomorrow? ["Near Time RV"]
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If a crashed disc fell out of the sky in the boonies miles from anyones home and none ever observed it or knew about it to leave a psychic imprint in the nonphysical ....Then I guess, yes, the event would be hard to spot from an RV perspective. IF the RVer were using "consciousness patterns" as "vectors of targeting" specific information...then it would be difficult to acquire the location if there are no conscious references or it was never witnessed by a living entity.
If someone had the money, people and access to proper facilities and knowledge...and if they were to rely on conscious information gathering as a vector of targeting an event of "national interest" in "near time RV". Then it would go something like this:
Some "near time" RV'er sitting inside a non-standard intelligence gathering facility would "become aware" that an event of national interest is about to take place. They would be targeting specific attributes in their search for these kinds of these events. Other "near time RV'ers" whom are independent and in different areas would pick up on these same events and would report the same.
Confirmation would lead to a detailed evaluation of the event.
Lets say they are looking for "near time" UFO crash events that failed to be retrieved. Once aware of the clustered event in time they would need to evaluate the scope of the event. How troubling it may be and how worthwhile it is to pursue it.
A)--If a witness had a high technology craft land in their backyard and witnessed it. There is too small of an imprint to easily notice.
B)--If that witness were to walk into a local news station 10 days in the future and guide a local camera crew to the site, and proclaim it to be of ET origin. This would leave a minor imprint.
C)--If a witness were to make a concrete case globally 15 days into the future and the world became accidentally aware of ET life forms. The RV'er would notice.
Normally, i'd think if you are a "near time" RV'er you would work from C to B to A.
You would backtrack how far ahead in time it is. What the event details are. Where the story originates.
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Lets say the first pickup is a C sized vector point. From the future hoopla of a story of alien life and concrete proof, an RV'er should be able to target the details of a news report detailing where the incident happened. When it happened. Whom is making the claim or whom is related to the claim.
If Present Hour for the RV team is March 29, 4:30pm. Then with a C level event they can figure out how far in the future the C level event is. Lets say the C-level event is estimated around +15 days. Lets put it at about April 14th, 11:00pm.
The RV'er needs to learn as much as he can about the story by witnessing as many glimpses of the displaced event in time as he can target. Lets say he finds references to an earlier report in Arkansas. (B class event occurring in +6 days). From there he targets the original reporters identity, then find out the identity of the original witness and the rough location of the downed craft. (A class event +2 days)
Having narrowed down the people associated with the event, the RVer will probably pass it along to someone whom can take it from there and standard surveillance occurs. As the crash occurs teams are dispatched to retrieve the craft and the witness is silenced by whatever means.
The events from the A class event never evolves into a C class event.
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Sounds like fantasy, but I just described what I did in practice with the ET's numerous times. I also put in several mockups of conversations they had with me on things they said I needed to be aware of for my own good many years ago.
Safe to say, it is hard to keep secrets against those with the knowledge, people, technology and facilities at their disposal.
If the worlds black budget researchers have never succeeded at these points as I described them. Then the ET have an immense start on them. I have never spoken about alot of things they mentioned which I believe are credible issues to keeping secrets and uncontrolled disclosures.