The Wedsworth-Townsend Act - S1-E1
Visible crew/equipment: When Station 10 arrives first on scene at the factory fire, as 10's third rig pulls up and lays the line in the wide shot, at the left of the screen in the background, we can see the hidden second cameraman who is shooting the footage from that angle, of all the rigs pulling in and turning.
The Wedsworth-Townsend Act - S1-E1
Visible crew/equipment: When Roy and John walk into the apparatus bay they stand behind Squad 51, and in this wide shot we can see that the floor area around the squad has nothing on it, but when Squad 51 is dispatched to 'traffic accident with injuries', there is now a long black tape line on the floor, near the front tire.
The Wedsworth-Townsend Act - S1-E1
Visible crew/equipment: When Squad 51 is dispatched to 'traffic accident with injuries', while en route as Johnny says "Hang a left, I know a shortcut," the shadow of filming equipment becomes visible on the hood of the squad.
Visible crew/equipment: In the treatment room, when Brackett gives the diabetic man an insulin shot, there is an actor's tape mark on floor at Dixie's feet, that we can see under the gurney.
Visible crew/equipment: When Squad 110 pulls up to Chopper 14, the reflection of the reflector screen is visible on the squad's surface, and when all the guys climb into the chopper, the reflector screen's reflection is visible again.
Visible crew/equipment: When Squad 51 is dispatched to the man trapped in the freezer, Johnny and Roy get into the squad, and the reflection of the large set lighting can be seen on the passenger door and vent window.
Visible crew/equipment: After Squad 51 arrives at the scene of the parachutist who's stuck in the tree, when Roy tells dispatch to have an engine respond to their incident, the reflection of array set lighting is visible on the squad's surface.
Visible crew/equipment: When John and Roy are tunneling through to the little girl trapped in the hole, they're in the second larger hole that has been shored up on all sides with wood (to keep it from collapsing), but when Roy points the chrome flashlight down the lateral hole Johnny's digging in, we can see in its reflection that the fourth wall doesn't exist, where the camera and lights are located.
Nurse's Wild - S1-E7
Visible crew/equipment: When Roy and Johnny are at the house with the unconscious woman and barking dog, the set lights are reflected in the deputy's helmet.
Visible crew/equipment: When the truck driver who felt like his head exploded is in the treatment room with Early, Brackett and Dix, as the camera passes behind Brackett it casts a moving shadow along the two walls.
Visible crew/equipment: When Roy walks into the ER with the man who attempted suicide three ways, due to the low angle of the camera we can see part of the unfinished ceiling of the ER set, near the nurses' station.
Visible crew/equipment: On site at the construction accident, when the man with the back injury is lying in the stokes and being lowered with the ladder, a crew member/cameraman is visible on the landing at the lower right side of the screen.
Visible crew/equipment: When Early and Dixie are in the treatment room with Jenny, after Early asks Jenny if she can move her legs, the moving shadow of the boom and mic are visible on the wall behind Dixie.
Visible crew/equipment: At the scene of Paula's traffic accident, when Captain Hammer stands in Engine 51's cab and tells Marco to get the reel line, the reflection of equipment and set lighting are visible in the chrome surface of driver's side spotlight.
The Wedsworth-Townsend Act - S1-E1
Visible crew/equipment: At the very start of the episode, as the camera slowly passes the vehicles and the posts, the moving shadow of the camera is visible on one of the posts at the left as it moves past it.
Visible crew/equipment: A few shots after Johnny informs Brackett of the victim of the radiation incident, there's a shot of the ER with two orderlies pushing a gurney towards the camera, and the two actors' tape marks are visible on the floor at the bottom of the screen, just before Brackett and Dixie stop there, when Brackett tells Dix to notify the radiation security guard.
Visible crew/equipment: After Roy helps the looter into the squad, when Johnny goes to the motorcycle and finds the leather bag full of jewelry, the mic wires that run from under his shirt/belt into his right pants pocket (with the transmitter bulge) are visible as he bends down.
Visible crew/equipment: After the looter is helped into the squad, just as Roy gets into the driver's seat, the reflection of camera equipment becomes visible on Squad 51's vent window (not to be confused with Roy's arm or the reflection of the red wing mirror).
Answer: I was rewatching a few first season episodes of Charlie's Angels (1976), and in S1xE6 "The Killing Kind," I recognized the same actor. So, to finally fully answer your question, the two baseball players in School Days are played by Rod Perry and Sean Fallon Walsh.
Super Grover ★