{
  "id": "2020-05-21-texas-am-corpus-christi-nas-terrorism-code-blue",
  "slug": "texas-am-corpus-christi-nas-terrorism-code-blue-2020-05-21",
  "institution": {
    "name": "Texas A&M University-Corpus Christi",
    "shortName": "TAMUCC",
    "state": "TX",
    "type": "public-masters",
    "enrollment": 12000,
    "alertSystemName": "Code Blue Emergency Notification System"
  },
  "incident": {
    "date": "2020-05-21",
    "type": "shelter-in-place",
    "cleryCategory": "advisory",
    "headline": "Alert issued after a terrorism-related shooting at an adjacent naval air station",
    "headlinePublic": "Alert issued after a terrorism-related shooting at an adjacent naval air station",
    "summary": "On May 21, 2020, [Texas A&M University-Corpus Christi](https://en.wikipedia.org/wiki/Texas_A%26M_University%E2%80%93Corpus_Christi) issued a Code Blue emergency alert after a [terrorism-related shooting at Naval Air Station Corpus Christi](https://abcnews.go.com/US/injured-shooting-naval-air-station-corpus-christi-suspected/story?id=70806888) just across the bay. The gunman, identified by the FBI as 20-year-old Adam Salim Alsahli, fired on a security guard at approximately 6:15 AM CDT before being shot and killed by naval security forces. [TAMUCC instructed the campus community to avoid campus and the surrounding area](https://www.facebook.com/islanduniversity/posts/tamucc-code-blue-nas-cc-is-currently-on-lock-down-but-the-situation-is-contained/10162759396070343/) while the base remained on lockdown; the campus was cleared to reopen at 9 AM.",
    "outcome": "One Navy security guard (MA2 Yaisa Coburn) shot in the ballistic vest, minor injury. Gunman Adam Salim Alsahli shot and killed by naval security forces. NAS-CC lockdown lifted before noon. TAMUCC campus cleared to reopen at 9 AM. FBI confirmed the attack as terrorism-related.",
    "resolution": "confirmed-threat",
    "casualties": {
      "killed": 0,
      "injured": 1
    }
  },
  "alerts": [
    {
      "sequence": 1,
      "type": "initial",
      "timestamp": "2020-05-21T06:15:00-05:00",
      "channel": "sms",
      "verbatimText": "TAMUCC CODE BLUE: NAS-Corpus Christi is on lock down after a report of an active shooter. Please avoid campus and the surrounding area. If you are on campus, remain indoors and away from windows until notified that the threat has ended.",
      "isVerbatimConfirmed": true,
      "sourceUrl": "https://www.facebook.com/islanduniversity/posts/tamucc-code-blue-nas-cc-is-currently-on-lock-down-but-the-situation-is-contained/10162759396070343/",
      "sourceDescription": "TAMUCC official Facebook post reproducing the Code Blue alert text",
      "annotations": [
        "The alert text was reproduced verbatim on TAMUCC's official Facebook page and confirmed by KRISTV reporting on the incident",
        "The shooting began at approximately 6:15 AM CDT when Adam Salim Alsahli approached the North Gate of NAS-CC in a vehicle and opened fire on security personnel",
        "Navy Master-at-Arms Petty Officer Second Class Yaisa Coburn was struck in her ballistic vest and survived; she had activated the Final Denial Barrier (FDB) to stop the vehicle",
        "TAMUCC is an island university separated from NAS-CC by Corpus Christi Bay; the Code Blue was precautionary given the nearby active shooter situation"
      ],
      "characterCount": 236
    },
    {
      "sequence": 2,
      "type": "all-clear",
      "timestampApprox": "Before 9:00 AM CDT, Thursday, May 21, 2020",
      "channel": "sms",
      "verbatimText": "",
      "isVerbatimConfirmed": false,
      "sourceDescription": "Reconstructed from KRISTV report that 'A&M-CC will reopen at 9 a.m. following NAS-CC lockdown'",
      "annotations": []
    }
  ],
  "context": "[Texas A&M University-Corpus Christi](https://en.wikipedia.org/wiki/Texas_A%26M_University%E2%80%93Corpus_Christi) is a federally designated [Hispanic-Serving Institution](https://en.wikipedia.org/wiki/Hispanic-serving_institution) on Ward Island in Corpus Christi Bay, separated from the Naval Air Station by a short stretch of water. On May 21, 2020, the base came under a terrorism-related attack when 20-year-old Adam Salim Alsahli drove to the NAS-CC North Gate and opened fire on Navy security personnel. [Navy MA2 Yaisa Coburn was struck in her protective vest](https://www.navytimes.com/news/your-navy/2020/05/21/security-forces-member-at-nas-corpus-christi-injured-during-active-shooter-situation-shooter-neutralized-officials-say/) but survived after activating the base's Final Denial Barrier; responding security forces shot and killed Alsahli. The FBI classified the attack as terrorism-related based on Alsahli's alleged support for extremist groups including Al-Qaeda in the Arabian Peninsula. TAMUCC issued an immediate Code Blue alert, its most severe emergency designation, instructing the campus community to avoid campus and the surrounding area. The campus was cleared to reopen by 9 AM, approximately two and a half hours after the attack. The incident is notable as one of the rare cases where a terrorism attack at a military installation directly triggered a campus emergency notification at an adjacent civilian university. TAMUCC's [Code Blue system](https://www.tamucc.edu/code-blue/) sends coordinated text, email, and phone call alerts to the campus community.",
  "keyFindings": [
    "The TAMUCC Code Blue alert text is confirmed verbatim from the university's official Facebook post",
    "The FBI classified the attack as terrorism-related, citing social-media posts believed to express support for extremist groups including Al-Qaeda in the Arabian Peninsula",
    "TAMUCC's geographic proximity to NAS-CC (separated by Corpus Christi Bay) meant a military terrorism event directly triggered a civilian campus lockdown",
    "The May 2020 alert was issued during the COVID-19 pandemic semester, when most students were attending classes remotely, limiting on-campus exposure"
  ],
  "responseTimeMinutes": 1,
  "sources": [
    {
      "title": "TAMUCC official Facebook post with Code Blue alert text",
      "url": "https://www.facebook.com/islanduniversity/posts/tamucc-code-blue-nas-cc-is-currently-on-lock-down-but-the-situation-is-contained/10162759396070343/",
      "type": "official-social",
      "accessDate": "2026-05-31"
    },
    {
      "title": "A&M-CC will reopen at 9 a.m. following NAS-CC lockdown - KRISTV",
      "url": "https://www.kristv.com/breaking-news-alerts/a-m-cc-issues-code-blue-to-avoid-campus",
      "type": "local-media",
      "accessDate": "2026-05-31"
    },
    {
      "title": "Naval Air Station Corpus Christi shooting terrorism-related, FBI says - Military.com",
      "url": "https://www.military.com/daily-news/2020/05/21/naval-air-station-corpus-christi-shooting-terrorism-related-fbi-says.html",
      "type": "local-media",
      "accessDate": "2026-05-31"
    },
    {
      "title": "Security forces member at NAS Corpus Christi injured during active shooter situation - Navy Times",
      "url": "https://www.navytimes.com/news/your-navy/2020/05/21/security-forces-member-at-nas-corpus-christi-injured-during-active-shooter-situation-shooter-neutralized-officials-say/",
      "type": "local-media",
      "accessDate": "2026-05-31"
    }
  ],
  "confidence": "medium",
  "tags": [
    "terrorism",
    "military-installation",
    "shelter-in-place",
    "hsi",
    "texas",
    "code-blue",
    "naval-air-station",
    "covid-era",
    "adjacent-incident",
    "confirmed-verbatim"
  ],
  "dateAdded": "2026-05-31",
  "lastUpdated": "2026-05-31",
  "addedBy": "ingestion"
}