translate English to French: The unencumbered balance was attributable to non-deployment of eight helicopters; reduced expenditure on equipment, rental of premises and utilities; the acquisition of fewer heavy vehicles to support contingents and fewer items of airfield support equipment; lower freight costs for contingent-owned equipment, lower rotation costs for military contingents and lower ration costs; and delays in the deployment of police personnel.
Le solde inutilisé s'explique par le non-déploiement de huit hélicoptères, la diminution des dépenses relatives aux installations, à la location de locaux et aux services collectifs, le coût inférieur aux prévisions des dépenses afférentes au transport du matériel appartenant aux contingents, à la relève des contingents et aux rations, et le déploiement différé du personnel de police civile.