Original sentence: The U.[emphasis added].government's refusal to disclose documentation on a long-past event likely means such documentation retains information that the US government still deems sensitive, and/or necessitating protection of persons living today
Edited sentence: Such an ongoing and purposeful decision to delay official disclosure indicates that even though the submarine in question was an outdated 1950s design, and that it sunk almost 40 years ago, and that parts of it were salvaged over 30 years ago, such documentation retains information that the US government still deems sensitive, and/or necessitating protection of persons living today.While the theories in Sewell's book are certainly questionable, it is true that the US government has yet to release any of the files, photographs, videotapes, or other documentary evidence of Project Jennifer.[emphasis added] Thus, conspiracy theories such as Sewell's proliferate in the absence of verifiable data and continuing refusal to provide full US government disclosure