OSHKOSH DEFENSE LLC

Four detectors flagged Oshkosh Defense. Benford's Law analysis found the leading digits of award amounts deviate significantly from expected frequency, with digit 2 appearing 21 percent of the time versus an expected 18 percent, and digit 1 appearing only 17 percent versus expected 30 percent. Modification growth on contract SPE7LX22D0076 expanded at a rate 1,453 times the initial award value, vastly exceeding the 16-fold median growth ratio for mechanical equipment manufacturers. The entity also concentrates heavily on sole-source awards at 45 percent of its portfolio, compared to zero median for its 35-firm peer group. Multivariate analysis flagged it as a statistical outlier given its scale, single-agency focus, and modification patterns.

Oshkosh Defense has received 1,683 awards totaling 10.7 billion dollars lifetime, all from the Department of Defense. The Benford test yielded a KS statistic of 0.131 with p-value 1.5e-25 across all transactions. The worst-performing contract showed a modification growth z-score of 15.67, nearly 91 standard deviations above peer norms. Sole-source awards comprised 755 of 1,683 total awards, producing a z-score of 4.11 relative to peers. The Isolation Forest anomaly score was 0.963 on a 0-to-1 scale.

These statistical signals reflect genuine anomalies but do not prove fraud. Oshkosh Defense is a large, established defense contractor with deep DoD relationships and specialized manufacturing expertise; concentration in sole-source awards and high modification frequency may reflect legitimate sole-source justifications and contract evolution rather than misconduct. The Benford deviation, while statistically significant, is modest in practical terms. The peer group for mechanical equipment manufacturing is small (35 firms), limiting statistical power. Digit-frequency tests are sensitive to rounding and contract-bundling practices common in defense procurement.