Hearings to examine the nominations of Mark Ditlevson, of Minnesota, and Brian Birdwell, of Texas, both to be an Assistant Secretary of Defense

Defense Posture and Global ThreatsSenate Armed Services · February 26, 2026 · 119th Congress
The Senate Armed Services Committee met to consider the nominations of Mark Ditlevson to be Assistant Secretary of Defense for Homeland Defense and American Security Affairs, and Brian Birdwell to be Assistant Secretary of Defense for Sustainment. Begins at ▶ 0:19:10
Transcript
Highlights

Title

Senate confirmation hearing for two Assistant Secretary of Defense nominees

Purpose

The Senate Armed Services Committee met to consider the nominations of Mark Ditlevson to be Assistant Secretary of Defense for Homeland Defense and American Security Affairs, and Brian Birdwell to be Assistant Secretary of Defense for Sustainment. Chair Wicker opened by citing delayed DHS reimbursement of DoD border-support funds and the strategic threat environment, while Ranking Member Reed raised concerns about domestic National Guard deployments, an El Paso high-energy-laser drone incident, and undisclosed Caribbean boat-strike documentation. Begins at▶ 0:19:10

Who spoke

• Chair Roger Wicker (R-MS)▶ 0:15:34: Opened the hearing, described the $10 billion DHS border-reimbursement fund and drone threats▶ 0:20:17, introduced both nominees' portfolios▶ 0:20:40▶ 0:21:09, and later pressed Ditlevson on the slow pace of DHS reimbursement, confirming implementation would begin in March▶ 0:44:26▶ 0:46:25.

• Sen. Jack Reed (D-RI), Ranking Member▶ 0:22:28: Raised concerns about National Guard deployments to D.C., L.A., Chicago, and Portland over local officials' objections and court rulings▶ 0:23:19, the El Paso laser/FAA dispute▶ 0:24:13, and undisclosed Caribbean boat-strike legal justifications▶ 0:25:20; later questioned Ditlevson on Fort Bliss detention deaths▶ 0:48:50 and the El Paso airspace closure▶ 0:51:11.

• Sen. Ted Cruz (R-TX)▶ 0:28:36: Introduced Brian Birdwell as a longtime friend, detailing his military career, September 11 Pentagon injuries, and Texas Senate service▶ 0:29:06▶ 0:30:31▶ 0:31:33.

• Brian Birdwell, nominee for ASD Sustainment▶ 0:33:51: Described his 20-year Army career, Pentagon injuries on 9/11, and priorities of "mission first, people always," a war-fighter perspective on sustainment, and coalition-building with Congress▶ 0:36:04▶ 0:36:53; later discussed cold-spray/3D-printing technology▶ 1:10:58, right-to-repair▶ 1:24:55, and shipbuilding industrial base▶ 1:44:30.

• Mark Ditlevson, nominee for ASD Homeland Defense▶ 0:37:51: Outlined his EOD and Naval Academy background and the administration's homeland-security strategy▶ 0:39:31; fielded extensive questioning on DHS reimbursement▶ 0:45:32, the El Paso laser/FAA coordination▶ 0:52:58, National Guard deployments in D.C.▶ 1:01:06, troops near polling places▶ 1:03:05▶ 1:16:25, Caribbean boat strikes and video classification▶ 1:25:53▶ 1:26:40, and AI/surveillance policy▶ 1:38:19.

• Sen. Deb Fischer (R-NE)▶ 0:54:53: Asked whether the El Paso coordination was a failure▶ 0:55:21 and how the department would address contested-logistics vulnerabilities▶ 0:58:25.

• Sen. Gary Peters (D-MI)▶ 0:59:57: Cited a $1.65 million-per-day National Guard D.C. deployment cost with no clear success metrics▶ 1:00:26 and pressed on the legal bar for deploying troops near elections under 52 U.S.C. §592▶ 1:03:53.

• Sen. Mike Rounds (R-SD)▶ 1:05:22: Raised concerns about vacating military spectrum bands (3.1–3.45 and 7.4–8.4 GHz)▶ 1:05:22 and cold-spray/electronic-fault-detection sustainment technology funded at $35.2 million▶ 1:09:26.

• Sen. Elizabeth Warren (D-MA)▶ 1:11:48: Said DoD spent over $2 billion on immigration enforcement in 2025 with no reimbursement agreement for FY2025▶ 1:12:17▶ 1:13:52, cited an internal National Guard study reporting demoralization from D.C. deployment▶ 1:14:36, and pressed Ditlevson on whether stationing troops at polling places is appropriate▶ 1:16:45.

• Sen. Tim Sheehy (R-MT)▶ 1:17:58: Recounted 2010 Iraq polling-station bombings and asked whether using all resources to protect a directly threatened polling station is appropriate▶ 1:19:02; later questioned Birdwell on scaling sustainment reform▶ 1:19:33.

• Sen. Angus King (I-ME)▶ 1:23:45: Urged accelerating 3D-printing/right-to-repair adoption rather than "exploring" it▶ 1:23:45; pressed Ditlevson on the classified second Caribbean strike video and terrorist-designation criteria▶ 1:26:18▶ 1:27:34, and objected that "restoring law and order in our cities" is not DoD's role▶ 1:28:49.

• Sen. Dan Sullivan (R-AK)▶ 1:30:16: Presented data on Russian/Chinese Arctic incursions, including a recent five-aircraft intercept, and criticized the National Defense Strategy's limited Arctic focus▶ 1:30:53▶ 1:32:52.

• Sen. Elissa Slotkin (D-MI)▶ 1:35:58: Cited reports that Secretary Hegseth rejected AI-contract conditions barring autonomous lethal weapons and mass surveillance▶ 1:36:18, and asked Ditlevson to commit that DoD would never conduct mass surveillance of Americans▶ 1:38:08.

• Sen. Mark Kelly (D-AZ)▶ 1:41:53: Pressed Birdwell on the link between commercial shipbuilding capacity and Navy sealift, noting the U.S. has ~80 flagged merchant ships versus China's over 5,000▶ 1:45:38.

• Sen. Tim Kaine (D-VA)▶ 1:48:24: Noted unanswered questions for the record from a December hearing▶ 1:48:48, disputed Ditlevson's account of FAA coordination given the 2024 DCA Reagan crash precedent▶ 1:50:36, and pressed on boat-strike targeting criteria▶ 1:53:27.

• Sen. Kirsten Gillibrand (D-NY)▶ 1:54:38: Questioned the transition of the Anomalous Health Incidents Cross-Functional Team▶ 1:55:09 and pressed on who authorized operationalizing the counter-drone system in Texas before FAA coordination was complete▶ 1:58:21.

• Sen. Tammy Duckworth (D-IL)▶ 2:00:28: Recalled Ditlevson's earlier refusal to rule out cross-state National Guard deployment beyond federal-property protection▶ 2:00:55, pressed on equipment/distance for troops near polling places▶ 2:03:07, and criticized the two-hour window given Governor Pritzker before federalizing the Illinois Guard▶ 2:07:00.

Key moments

• Wicker said DHS reimbursed DoD nothing in FY25 and only $180 million in FY26 against a $10 billion fund meant to cover four years of border operations, warning the money could expire▶ 0:44:26; Ditlevson said reimbursement should "begin in earnest" in March▶ 0:46:21.

• Reed said the FAA warned of a "grave risk of fatalities" before DoD's high-energy laser was used near El Paso, and that DoD proceeded anyway, triggering a 10-day airspace closure▶ 0:24:13▶ 0:51:11; Ditlevson maintained coordination (not approval) with the FAA had occurred over 14 months▶ 0:53:45.

• Reed said Fort Bliss's detention facility, built entirely with $365 million in DoD funds, has seen three deaths since opening, including one being investigated by the FBI as a homicide▶ 0:49:15; Ditlevson said the Army and FBI/DOJ were handling the respective investigations▶ 0:50:30.

• Warren said DoD spent over $2 billion on immigration enforcement in 2025 with no FY2025 reimbursement agreement with DHS, calling the funds "just gone"▶ 1:13:52; Ditlevson insisted "everything is on a reimbursable basis"▶ 1:13:44.

• Warren cited an internal National Guard study describing troops' "fatigue, confusion, and demoralization" from the D.C. deployment▶ 1:14:36; Ditlevson said he had not heard such feedback from the National Guard Bureau chief▶ 1:15:37.

• Warren and Duckworth separately pressed Ditlevson on whether stationing troops near polling places is appropriate; he repeatedly declined a yes/no answer, calling it "speculative," prompting Warren to say she had "real concerns" about him in the job▶ 1:16:45▶ 1:17:05.

• King asked why a second Caribbean boat-strike video from September 2 remains classified when a first video aired on Fox News the next day, and said he had seen it and saw no justification beyond it being "embarrassing"▶ 1:26:18▶ 1:26:40.

• Kaine noted 67 people died in the 2024 DCA Reagan crash due to inadequate DoD-FAA communication and expressed skepticism toward Ditlevson's claim of "robust communication" ahead of the El Paso incident▶ 1:51:06.

• Gillibrand established that the Texas counter-drone system was operationalized without completed FAA coordination under Sections 130I and 124N, despite Ditlevson's earlier characterization that requirements had been met▶ 1:57:14▶ 1:58:21.

• Duckworth read 18 U.S.C. §593 barring armed-forces interference with voting and noted Governor Pritzker was given roughly two hours to respond before Trump moved to federalize the Illinois National Guard▶ 2:07:00.

Metadata

CommitteeSenate Armed Services
Chamber / CongressSenate · 119th Congress
DateFebruary 26, 2026
TypeMeeting
Witnesses
(none listed in event metadata)
Videosenate-isvp
Transcript367 caption blocks · 14,996 words · 2:09:22 runtime
EventCongress.gov 337984