here's abc's nick schifrin. >> reporter: unprecedented security jitters.hemes played out in the garden have been replaced by suspicion. even the queen's own son was mistaken as an intruder. on wednesday night, prince andrew, the duke of york, was walking in the gardens when two armed police stopped him and made him put his hands up. >> you see someone where they shouldn't be, you confront the person, you say, hey, who are you? and you find out who it is and you end up with egg on your face. >> reporter: an embarrassed scotland yard says the officers didn't pull guns. there's good reason the queen's guards are jumpy. on monday night, real-life intruder got into the queen's home. he broke through a door into an area displaying the coronation necklace. police arrested him and an accomplice waiting outside. prince andrew accepted the apology and hopes his next garden stroll is safer. nick schifrin, abc news, outside buckingham palace. >> our thanks to nick. >>> here at home, a weekend sootout with police has left a homeowner dead. that man, 107 years old. >> p

nick schifrin, abc news, buckingham palace. >> pretty remarkable. unlike the first time. when the intruder tried to get in. the intruder made it to the queen's bedroom. the first time many, many decades ago? >> made it into her bedroom. she had to talk to him while security scrambled. >> the queen is braver than i am. >> her son had to put his hands up. >> yeah, that's why scotland yard is pretty embarrassed. >> i'm sure. >>> all right. coming up, what he did for love. the devoted husband who walked for a year to save his wife. now it is paying off. >>> ahead, the miracle baby. doctors gave her no chance to survive. a verdict she refused to accept. you are watching "world news now." >> announcer: "world news now" continues after this from our abc stations. ♪ lucky to have been h ♪ lucky to have been what i have been ♪ >>> welcome back. our next story is one of love, tenacity. it is our favorite story of the day. >> south carolina husband was so determined to save his wife that he put on a sign and started walking. this morning a year of walking is about to pay off. here's

abc's nick schifrin from london tonight. >> reporter: for buckingham palace, it's been a week of unprecedented security jitters. the calm scenes that usually play out in this garden have been replaced by suspicion. even the queen's own son mistaken for an intruder. prince andrew was walking in the gardens when two armed police confronted him, forced him to identify himself and reportedly made him put his hands up. >> suddenly, you see somebody in an area where the public shouldn't be, then, yes, you are going to confront that person, say, hey, who are you? and you realize who it is and you end up with egg on your face. >> reporter: today, an embarrassed scotland yard insisted police didn't pull guns, but it apologized, saying, "we're grateful to the duke for his understanding." there's good reason the queen's guards are jumpy. on monday night, a real life intruder got into the queen's home. he broke through a door near an area displaying the priceless coronation necklace. police arrested him and an accomplice waiting outside. it's the most serious palace breach in more than 30 years. in 1982,

abc's nick schifrin is outside the palace right now. od morning, nick. >> reporter: good morning, bianna. you're right. this is one of the most serious security breaches in more than 30 years. and police are investigating how it's possible that someone could break into the queen's home. it's like an intruder breaking into the white house. buckingham palace security is supposed to be top-notch. but this morning, we're learning a man was able to scale over the 12-foot walls, kick open a door and walk right into the state rooms. during summer days, they're open to the public. at night, they're supposed to be secure. the man set off motion detectors. that's when police rushed to the scene, arrested him and charged him with trespassing, burglary. >> when there's a break-in at the royal palace, the secretary will say, let's have a review of security. there will be one. >> reporter: it's the worst security breech since 1982, when this man, michael fagan, hopped the fence, climbed up a drainpipe, right into the queen's bedroom. she woke up and s

abc's nick schifrin is at buckingham palace this morning with the story. nick, good morning. >> reporter: good morning, dan. you're absolutely right. two security incidents in one week, inside the queen's own home. clearly, the queen's guards with jumpy. it was reportedly a tense standoff in the buckingham palace gardens, armed police confront manned they thought was an intruder. they shouted at the man to put his hands up. that's when the british tabloid said he was the queen's own son. prince andrew, the former husband of sarah ferguson. the metropolitan police tell abc news that no arms were drawn. no force was used. and the man was cleared after identifying himself. it shows the police are tense. >> this time of the year, tens of thousands of people coming into the palace to view it and exiting through the garden. and then suddenly, you see somebody is in an area where the public shouldn't be. then yes, you are going to confront that person. >> reporter: the confrontation happened on wednesday, just two days after a real-life intruder broke into the que