Day Three: Gunshot residue tests on Rivera inconclusive

Foster tells the Proseuction that with the results of her tests on the AAK Kit, they are not consistent with gunshot wound residue. Foster is then asked to open the SEM kit. She says it works similar to a lint brush you would use to get lint off of clothing, with a sticky substance dabbed on the hand to pick up samples.

Prosecution has not yet stated who the individual being tested in these kits is.

Foster explains that with the SEM Kit, they came to the result that they did not find the components fused together, nor a large quantity of all three particles of lead, barium, and antimony.

From this, she said, test results are considered "inconclusive." She explains they don't use "negative," when analyzing gunshot residue. Only "positive" or "inconclusive."

Prosecution asks if there's any other reasons a person might have these materials on their hands. Foster says you can get the individual particles on your hands from other things, but not you can not find them fused together other than threw the discharge of a firearm.

Prosecution now states these are, in fact, the samples taken of Sammy Rivera's hands for gunshot residue.