As Gibbs, McKenna, and Sunset, now somehow accompanied by five other ponies-turned humans and a dragon-turned-puppy, walked to Sugarcube Corner after parking Gibbs's sedan nearby, Gibbs turned to McKenna with a scowl after alerting his team to meet him there.

"How long has the CIA known about this world?"

"Ever since photos and several viral videos of Princess Twilight's first visit got onto the Internet." McKenna replied. "We got them taken down pretty quickly once we realized people were starting to investigate on their own, outside the law. We had to make some rather unpleasant phone calls and send some even more unpleasant anonymous emails to quiet everything to a manageable point.."

"Sounds like a fun time." Gibbs replied with an amused tone.

"You would think that, Agent Gibbs. I had to write at least half of those emails. And making an email sound threatening? Not exactly my forte'." Eric replied. "I'm more a fieldwork type of person. I like to be in the thick of it."

"You know, I think we might get along after all, Eric." Gibbs smirked. "You sound like me, back in the day."

Eric chuckled as they approached Sugarcube Corner. As the ten of them entered, they promptly froze once again, right in their tracks. Gibbs slowly raised an eyebrow.

Because six other humans who looked like complete carbon-copies of Twilight's guests and Twilight herself. albeit with glasses, were sitting around a table, staring at them with wide eyes. An assortment of phones and books lay on the table, likely their attention was drawn away from them.

"Umm...Twilight?" asked the human Applejack. "Am I seeing things?"

"Which Twilight are you referring to?" Princess Twilight asked. "Me or my human self?"

"Uh...both." human AJ replied. "Damn...this is awkward."

"This isn't awkward, this is awesome!" said both Rainbow Dashes at the same time, both squealing in joy. "I can finally meet someone as awesome as I am! How cool is that?"

Gibbs rolled his eyes and head-slapped the pony version of Rainbow, causing her to stumble.

"What was that for?" she yelped in shock. "Did you just…"

"Think about it." Gibbs frowned. "Though I am more than mystified at how there's now TWO of each of our guests, we'll save that for later."

"I agree. This isn't exactly how we wanted things to go." Eric added.

"And you are, exactly?" human Rarity asked.

Gibbs and McKenna flashed their badges and IDs.

"Oh...NCIS and the CIA?" human Pinkie smiled. "That makes sense. Wait, does that mean I can, like, make some word-anagram-thing to combine them together? Like NCIAS? What would that be called anyway?"

"Uh, I don't think that's even a type of word, Pinkie." Sunset replied. "Let's just sit down and compare notes."

"Umm…Boss?"

Gibbs and everyone else turned around to see an astounded Ducky, Palmer, McGee, DiNozzo, and Ziva staring at them, especially the two sets of identical-looking teenagers.

"Mr. Palmer?" Ducky asked. "Are you seeing double right now?"

"Yes, Doctor Mallard." Palmer replied. "I think we all are."

Gibbs stood up and head slapped all three of the remaining agents in quick succession, each voicing quick cries of shock.

"Snap out of it. Take a seat." Gibbs smirked. "Before I get the urge to head slap you guys again. We've got to compare notes."

====

As the NCIS Agents moved several tables together with Agent Eric's help, Sunset and Princess Twilight were occupied by getting the Equestrians introduced and somewhat used to seeing a splitting image of themselves in their vicinity.

It went surprisingly well, given the task at hand. Eventually, the tables came together, and everyone sat down.

"So, if you're here, Princess…" human Fluttershy said. "What's going on?"

"I'm not sure myself." Princess Twilight replied. "Sunset told me she needed my help here, and the Elements decided to tag along."

"And you just let them do that?" DiNozzo asked incredulously.

"Well, it was a rather starting summons, and I didn't have much to say against it…" Princess Twilight replied. "Anyway, so a US Marine got stabbed here, right? What's this have to do with Equestria?"

"Because we suspect someone from your world may be involved." Ziva replied. " Lance Corporal Grant said that a portal opened up before he was stabbed, and there was a mention of a name. Sombra, I believe."

That made Twilight, Spike, and Sunset freeze noticeably.

"He's alive?" Spike gasped. "The Crystal Heart blew him to bits!"

"Slow down." Gibbs replied. "What do we need to know?"

"Essentially King Sombra was the ruler of the Crystal Empire in the northern part of Equestria." Twilight replied. "He kept his own people as slaves, tyrannized the northlands, and from what Princess Celestia told me, nearly started three wars with Equestria. She and Princess Luna managed to banish him before the Empire disappeared. When it returned last year, Sombra came back with it. Spike and my sister in law, Princess Cadance, managed to return the Empire's Crystal Heart, which then blasted Sombra into millions of pieces."

"Then how did he end up here?" McGee asked.

"For a master of dark magic like Sombra? It wouldn't be too hard." Sunset replied. "Then there's the other problem here. Nearly everypony in Equestria has a human counterpart here. And I'm willing to bet Sombra has one as well."

"Meaning they could be working together." Eric mused. "That could be bad. What exactly is King Sombra capable of?"

"He was capable of taking on Princess Celestia and Princess Luna in direct magical combat on multiple occasions, and they control the very power of the Sun and Moon back in Equestria." Twilight said. "He was also a skilled general and swordsman."

"Brilliant."DiNozzo snorted. "He sounds like someone I wouldn't want to run into in a dark alley."

"That's an understatement." Princess Twilight replied. "What does this all have to do with Lance Corporal Grant?"

"He saw this King Sombra presumably come through the portal and be greeted by someone who said they were happy to "meet face to face"." Ziva replied, referencing her notes. "So I would guess that we're dealing with an accomplice of his here."

Then, Gibbs turned to the window as he stood up suddenly. A black SUV had driven into the parking lot, and was idling in front of Sugarcube Corner. As Gibbs approached, a hand on his sidearm, the window rolled down.

And a beam of black and purple light shot outwards. As everyone inside took cover, the beam impacted against the wall of the bakery and exploded in a violent burst of nightshade-purple. While fragments of the bakery wall rained down, the Agents got to their feet and drew their pistols. Gibbs then looked upwards to see the SUV had vanished into thin air, almost as if it had never been there.

"It's gone!" Gibbs called out in a low growl. "Stand down."

As the Agents holstered their weapons, Eric and Gibbs exited through the blasted-open portion of the wall and surveyed the area.

"This just got serious." Eric said.

"You're telling me." Gibbs replied with a grimace as he watched the debris settle.

Update!

Next time - the Equestrians and their counterparts head to NCIS HQ, Twilight speaks with Celestia, and Sombra reviews his plans.