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Property and Equipment, Net | 9 Months Ended
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Sep. 30, 2025
Property, Plant and Equipment [Abstract] |
Property and Equipment, Net | 5. PROPERTY AND EQUIPMENT, NET Property and equipment, net, consisted of the following:
|  | September 30, 2025 |  |  | December 31, 2024 |
Lab and test equipment |  | $ | 24,919 |  |  | $ | 24,421 |
Vehicles |  |  | 6,625 |  |  |  | 6,360 |
Equipment |  |  | 69,031 |  |  |  | 60,763 |
Furniture and fixtures |  |  | 3,281 |  |  |  | 3,221 |
Leasehold improvements |  |  | 14,224 |  |  |  | 14,029 |
Aircraft |  |  | 12,386 |  |  |  | 12,386 |
Building |  |  | 5,748 |  |  |  | 5,763 |
|  |  | 136,214 |  |  |  | 126,943 |
Land |  |  | 1,089 |  |  |  | 1,089 |
Construction in progress |  |  | 3,079 |  |  |  | 3,993 |
Less: Accumulated depreciation |  |  | (77,430 | ) |  |  | (68,249 | )
Total property and equipment—net |  | $ | 62,952 |  |  | $ | 63,776 |
Total depreciation expense included in the unaudited condensed consolidated statements of operations was $3.3 million and $9.7 million for the three and nine months ended September 30, 2025, respectively, and $2.8 million and $8.7 million for the three and nine months ended September 30, 2024, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-7 + Details
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