Assertion: gun's number | /r/HasProperty | altered
Facets:
Source sentences:
text: However, ATF NTC uses other technologies and forensic expertise when serial numbers are not present, or have been altered or obliterated from firearms, and local detectives, prosecutors and U.S. Attorneys have many other resources and investigative powers aside from NTC when working gun crimes, including the NIBIN.
text: If a firearm’s serial number has been altered or destroyed in any way, NTC uses forensic expertise and technology to identify its origins and piece together its history.