A rare 10mm, a truck found at a house nobody searched, and a January trip the state calls a practice run

The state spent the day trying to close two gaps: where the gun came from and where the truck went. ATF agent Kenneth Stengel testified that 10mm Glocks are "not very common" and that only six had been bought at one Jacksonville gun store; that John Biggerstaff bought a Glock 10mm on June 8, 2016 and forfeited it after a felony conviction; and that agents finally located the blue Ford F-150 on Oct. 14, 2022 using Google location data from Tenon's device. FBI Special Agent Bobby Blythe began the cellphone evidence, describing how on Jan. 29, 2022 — about two and a half weeks before the killing — Tenon's phone travelled toward Bridegan's home and a gymnastics facility and then on to Jacksonville Beach, while Fernandez's phone sat at the Potomac Avenue rental property. Prosecutors call that a practice run. Det. Johns returned to defend the investigation and gave up more ground: no physical evidence connects Biggerstaff's 10mm to Fernandez; there is a 32-minute gap in surveillance coverage the night of the murder; and investigators received information in 2023 that the murder weapon was destroyed shortly after the killing. Dreicer bore in on the exchange until it was on the record three times over — "There is no evidence of that. Correct?" "There is no physical evidence of that" — and mocked the decision not to search the house where the truck was finally found: "Other than the fact that the biggest break in the case was found at Jimmy Jones's house... there was no reason to search the house." Away from the jury, Judge Kite ordered Kirsten Bridegan to hand her cellphone to the court by 9 a.m. Friday, rejecting her lawyer's objections and setting up the next day's collision. — News4Jax/WJXT — Day 4 · News4Jax/WJXT — judge orders widow to turn over cellphone · First Coast News — defense presses agent, Day 4 · Court TV — live trial updates

• Kenneth Stengel — ATF agent (News4Jax has also rendered his first name as Mike). 10mm Glocks are uncommon; Biggerstaff bought one in 2016 and forfeited it after a felony conviction; agents found the F-150 in October 2022 using Google location data from Tenon's device. On cross he acknowledged investigators never searched the home where the truck was found.
• Det. Chris Johns — Jacksonville Beach Police, lead investigator (second day of cross). Conceded no physical link between Biggerstaff's 10mm and Fernandez, a 32-minute surveillance gap on the night of the murder, and 2023 information that the weapon was destroyed soon after the killing.
• FBI Special Agent Bobby Blythe — FBI cellphone location analyst. Opened the digital case: on Jan. 29, 2022, Tenon's phone moved past Bridegan's home and a gymnastics facility and on to Jacksonville Beach while Fernandez's phone stayed at the Potomac Avenue property.