Drones have helped patrol officers at the Huntsville Police Department in Alabama collect threat intelligence and forensic evidence on the job.

A team of researchers have identified a way to detect whether a person has touched or ingested cocaine using high-resolution mass spectrometry.

Latent or hidden fingerprints on guns, knives or shell casings are often the best evidence in court, but getting a clean print is difficult. This new technique enables crime scene investigators to create a negative image of the fingerprint without damaging it.