7:11 AM UPDATE: A Toyota pickup has gone off the road and into a yard. Police have Holden shut down right now between 14th and 16th but the tow truck is already there so it might not be for too long. At least one person is hurt – a private ambulance is on scene.

7:26 AM UPDATE: Police at the scene tell us the truck’s driver was the one taken to the hospital – private ambulance generally means NOT life-threatening injuries – and was alone in the truck. We’re waiting for the tow truck to get the truck out of the yard to check on possible damage to the house, which neighbors say was unoccupied.

7:37 AM UPDATE: It doesn’t appear the house was hit; the damage looks to be confined to the fence the truck went through, and the grassy slope/yard. (Thanks to everyone who texted and e-mailed us about the chopper, which is what tipped us to the fact that what was only a medic call on the 911 log was actually a crash.)

8:55 AM: Went back to the scene a little while ago and SW Holden is completely clear again.

11:51 PM: So far no info – and the helicopter has left the area. If we do find out anything tonight or tomorrow, we’ll add it here.

ADDED 9:45 AM FRIDAY: Sgt. Rodney Chinnick of the King County Sheriff’s Office tells us Guardian One was helping search for assault suspects. We don’t have the incident location yet but he says, “A 40 year old male was assaulted. He suffered a broken jaw and ankle”; 1300 block of SW Roxbury.

SUNDAY MORNING: Southwest Precinct Lt. Alan Williams told us they did NOT have Guardian One (the area’s only law-enforcement chopper, owned/operated by King County Sheriff’s Office, but assists other agencies) out on anything. Was it a KCSO case? No word yet.

Multiple Puget Sound public safety agencies are teaming up to practice a rooftop firefighting/rescue drill off a high rise skyscraper. The drill involves lowering firefighters and firefighting/rescue equipment from helicopters onto the roof of the 50-story Safeco Plaza Building in downtown Seattle.

The Snohomish County Sheriff’s Office Helicopter will lower 6 members of the High Rise Firefighting/Rescue Team onto the roof of the Safeco Plaza Building. King County Sheriff’s Office will fly their Guardian One helicopter over the operation in order to videotape and downlink a live feed of the operation that will be received at the Incident Command post at the City’s Joint Training Facility.

The exercises will demonstrate the ability of the Seattle Urban Areas Security Initiative (UASI) Regional Aviation partner organizations to work together. The participating partners will emphasize aviation safety in the air and on the ground.

8:50 PM: We headed down toward West Marginal Way after reports it was seen over eastern West Seattle. Co-publisher Patrick Sand says it’s now visible over the eastern shore of the Duwamish River – we’re assuming it’s the same chopper – with a spotlight. So, still a mystery, but it’s definitely not just focused on West Seattle. There are still NO police or fire incidents in our area that would match to it. TV choppers do not routinely fly at this time of night, either.

9:09 PM: Via Facebook, Lisa G reminds us that high-school football games are sometimes videotaped via chopper, so we do get Friday night flyovers this time of year. We thought briefly we’d found a game scheduled at WS Stadium tonight, but it was last year’s schedule. Mystery continues!

9:21 PM: Lt. Alan Williams at the Southwest Precinct confirms police don’t have anything going on that would have merited a chopper (overall, quiet in general so far right now, he says).

(Photo tweeted by @cpatchworks)
We’re not sure if this is the helicopter that’s been flying low over parts of West Seattle this morning, from Alki to Fauntleroy – haven’t gotten a close enough look yet – but in case you missed the advisory we published on Friday, here it is: A chopper based at Boeing Field is flying over local urban areas to get a baseline reading on “normal” radiation levels, not related to the Japan disaster, but as part of a two-year-old federal project. If you get a close look at the low-flying chopper, you can compare it to the photo on this page.

4:36 PM: The second time we heard the approaching Chinook today in West Seattle, we were someplace we could get a photo – outside, at Alki’s Bar-S Playfield, covering the West Seattle Little League regular-season-ending barbecue and Snack Shack ribboncutting (full story on that later). More than one person in attendance joked that WSLL must have booked a flyby for the occasion. Several others from around West Seattle have e-mailed or otherwise messaged to say this was low enough to rattle their home – as our photo attempts to show, low indeed. No concrete info on what they’re doing, but the last notable flyover on Memorial Day eventually was confirmed as training, according to our pal Patty at Roosiehood.

5:17 PM: Elizabeth solved the “mystery” pretty fast. As was noted in our morning preview, the Museum of Flight had an all-day helicopter event – and she confirms that the Chinook was part of it, sharing the closeup shot above as it landed at Boeing Field.

We’re not sure exactly what the mission/destination is/was, but just in case you wondered if you were hearing things – yes, two military helicopters (Chinooks, we think) flew over Fauntleroy and points east a little while ago, and then one headed back west – that’s the one we got on video. Before they headed this way, we had seen the two over Vashon, headed north, and Twitter talk includes Eastside sightings too. (And thanks to Howie for mentioning a forum discussion at MyBallard.com.)

MONDAY AFTERNOON UPDATE: Patty at Roosiehood, one of the other neighborhood sites that reported on the chopper flyover last night, talked to the Army today and learned it was just a training flight.

(Photo by Danny McMillin)
When someone texted us a half-hour or so ago saying an Osprey was headed this way, we thought maybe they meant the feathered type. Nope. It was the tilt-rotor military-aircraft V-22 Osprey type. We have already mentioned this on Twitter and on Facebook, but some FB commenters say it was window-rattling quality in parts of West Seattle (not down here in Upper Fauntleroy, though), so in case you were wondering too, we’re also making note of it here. (Boeing is apparently awaiting some news about an upcoming contract for more.)

11:26 PM: Finally a photo! Major thanks to Danny McMillin for sharing what he and his camera captured from Alki.

4:39 AM NOTE: The helicopter left shortly after we published this. As for what it was doing – no reply yet from police, but whenever we do finally get info later this morning, we’ll add it to this …

11:38 AM NOTE: Heard back this morning from Lt. Ron Rasmussen at the Southwest Precinct, who couldn’t find any evidence it was related to an SPD case. So now we’re checking with King County Sheriff’s Office, to whom the lone law-enforcement chopper in the area (Guardian One) belongs, in case it was a county case that just happened to spill over here.

4:23 PM NOTE: We finally got a bit of information, but not much. King County Sheriff’s Office spokesperson Sgt. John Urquhart says it was a KCSO case – but he hasn’t been able to rustle up the information on anything beyond, an arrest was being made. Not a big deal, he insists.

11:16 AM UPDATE: It was definitely Guardian One, the King County Sheriff’s Office helicopter that assists with other agencies when needed/available, but KCSO spokesperson Sgt. John Urquhart says it’s NOT an active crime scene: He says it was looking for a car involved in an “earlier incident in Burien.”