Two of my married friends (they're married to each other), we'll call them K (female) and C (male) have had some interesting experiences.
C is an Arizona Highway Patrolman, and leaves his cruiser in the "visitor/overflow parking area in their townhouse complex when not on duty. (Amusing story: He originally wanted to park the cruiser in the parking area by their house, and the pickup in the visitor area, but the complex said they'd tow the pickup if that was the case. Now he just parks the cruiser there, and they won't tow it.
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You'd think criminals would know better than to break into a cop's house, particularly when both the husband and wife shoot all the time. But unfortunately, they've had a few run-ins with less-than-savory people who don't seem to understand the concept of "no trespassing".
Amusing Story #1: C is assisting Phoenix metro cops with some fender-bender when he gets a call from K saying the house is being broken into, she's got the Walther P99 and the phone, and is secure in the master bedroom. C glances over at the metro cop, and inquires if he would be so kind as to pay a visit to his home (only a few blocks away) to handle the situation while C finishes up with the traffic incident. The metro cop was amused, and was there in a matter of moments. Bad guy had been fiddling around with the AC unit and trying to force the rear door, but had fled before the police arrived. Moral of the story: It's generally better for you and the police to call 911 rather than your husband if you want a fast police response. Generally.
Amusing Story #2: C and K are in bed, sleeping. It's about two in the morning, when a loud "CRASH!" comes from the 8-inch-wide, 6-foot-tall window that's next to their front door. Both awake instantly, K rolls for the shotgun and covers the bedroom door, while C grabs his Sig and, clad in boxer shorts, peers out from the bedroom door. A half-naked bad guy is stuck in the window, struggling to get in. When confronted with a pistol-mounted light and loud, authoritative commands, he flees. K has the cops on the phone, and they arrive in minutes.
A half-naked man with cuts consistent with being cut by glass is found lurking in the bushes about a hundred feet away. C identifies him as the intruder. He evidently turned on their garden hose and watered their privately owned Crown Victoria and Ford Ranger pickup, as well as the police cruiser and some neighbors cars.
Here's the kicker: He used the "This Home Protected By [Alarm Company]" sign on a stick to smash in the window.
They've since replaced vulnerable windows of that type with some type of beefy glass that doesn't shatter, and is a pain in the ass to break. Not sure what. They had a security door (one of those locking semi-decorative gates with anti-bug screens and anti-bad-guy bars) protecting their front door, so the bad guy evidently took the easy way.
Moral: Good locks aren't everything. Get good glass too, particularly around doors. Also have door locks that require a key on the inside if there's a window anywhere near it.