Exhibit A JOINT FILING AGREEMENTJoint Filing Agreement • February 14th, 2019 • Blackstone Holdings III L.P. • General industrial machinery & equipment
Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder (the “Exchange Act”) the undersigned hereby agree to the joint filing of Blackstone Capital Partners (Cayman) VI L.P., Blackstone GTS Co-Invest L.P., Blackstone Family Investment Partnership (Cayman) VI-ESC L.P., BTO Omaha Holdings L.P., Blackstone Management Associates (Cayman) VI L.P., BCP VI GP L.L.C., Blackstone LR Associates (Cayman) VI Ltd., BTO Omaha Manager L.L.C., Blackstone Tactical Opportunities Management Associates (Cayman) L.P., BTO GP L.L.C., Blackstone Tactical Opportunities LR Associates (Cayman) Ltd., Blackstone Holdings III L.P., Blackstone Holdings GP L.P., Blackstone Holdings III GP Management L.L.C., The Blackstone Group L.P., Blackstone Group Management L.L.C. and Stephen A. Schwarzman, on behalf of each of them of any filing required by such party under Section 13 of the Exchange Act or any rule or regulation thereunder (including any amen
