In the movie 'The Firm', the crusty, unpleasant in-house detective for the corrupt law firm tells the young lawyer (Tom Cruise) that he was being paid to be suspicious when there is nothing to be suspicious of. The same holds true here. It is doubtful that the Nasa scientist was targeted at random. Israel has a track record for acquiring vital information to its benefit throughout the world. It is not spying against the US but engaging in illegal espionage that can, and did compromise US security. Being suspected of or implicated in espionage, however tangentially, is not to its credit particularly now that its moral credibility is on the line. The begged question therefore is whether this FBI operation was also motivated by an attempt to further discredit Israel as part of exerting political pressure on her.
Israeli soldier lightly wounded after being hit by car south of Hebron (Haaretz)
from the article: U.S. arrests ex-NASA scientist over bid to spy for Israel